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1080180881 = 13157529241
BaseRepresentation
bin100000001100010…
…0100000010010001
32210021112212121022
41000120210002101
54203011242011
6255104005225
735524246253
oct10030440221
92707485538
101080180881
1150480897a
12261900815
13142a319b0
14a365dcd3
1564c6d8db
hex40624091

1080180881 has 8 divisors (see below), whose sum is σ = 1170683304. Its totient is φ = 990737280.

The previous prime is 1080180877. The next prime is 1080180889. The reversal of 1080180881 is 1880810801.

It can be written as a sum of positive squares in 4 ways, for example, as 11937025 + 1068243856 = 3455^2 + 32684^2 .

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

It is not a de Polignac number, because 1080180881 - 22 = 1080180877 is a prime.

It is a super-2 number, since 2×10801808812 = 2333581471355872322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080180889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262580 + ... + 266661.

It is an arithmetic number, because the mean of its divisors is an integer number (146335413).

Almost surely, 21080180881 is an apocalyptic number.

It is an amenable number.

1080180881 is a deficient number, since it is larger than the sum of its proper divisors (90502423).

1080180881 is a wasteful number, since it uses less digits than its factorization.

1080180881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529411.

The product of its (nonzero) digits is 4096, while the sum is 35.

The square root of 1080180881 is about 32866.1053518667. The cubic root of 1080180881 is about 1026.0428429863.

The spelling of 1080180881 in words is "one billion, eighty million, one hundred eighty thousand, eight hundred eighty-one".

Divisors: 1 13 157 2041 529241 6880133 83090837 1080180881