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1880000881 = 11431396541
BaseRepresentation
bin111000000001110…
…1000100101110001
311212000112221101021
41300003220211301
512322240012011
6510314535441
764405513063
oct16003504561
94760487337
101880000881
11885236540
12445737581
1323c650975
1413b97d733
15b00ac471
hex700e8971

1880000881 has 8 divisors (see below), whose sum is σ = 2055673728. Its totient is φ = 1705122000.

The previous prime is 1880000869. The next prime is 1880000897.

1880000881 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1880000881 - 25 = 1880000849 is a prime.

It is a super-2 number, since 2×18800008812 = 7068806625121552322, which contains 22 as substring.

1880000881 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1880001881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193530 + ... + 203011.

It is an arithmetic number, because the mean of its divisors is an integer number (256959216).

Almost surely, 21880000881 is an apocalyptic number.

1880000881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1880000881 is a deficient number, since it is larger than the sum of its proper divisors (175672847).

1880000881 is a wasteful number, since it uses less digits than its factorization.

1880000881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396983.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 1880000881 is about 43358.9769367313. The cubic root of 1880000881 is about 1234.2013513445.

It can be divided in two parts, 1880000 and 881, that added together give a palindrome (1880881).

The spelling of 1880000881 in words is "one billion, eight hundred eighty million, eight hundred eighty-one", and thus it is an aban number.

Divisors: 1 11 431 4741 396541 4361951 170909171 1880000881