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2083100881 = 456412
BaseRepresentation
bin111110000101001…
…1001100011010001
312101011201111012111
41330022121203101
513231233212011
6542412025321
7102423031261
oct17412314321
95334644174
102083100881
11979946584
124a1762241
13272751c94
1415a92b7a1
15c2d2a121
hex7c2998d1

2083100881 has 3 divisors (see below), whose sum is σ = 2083146523. Its totient is φ = 2083055240.

The previous prime is 2083100857. The next prime is 2083100911. The reversal of 2083100881 is 1880013802.

The square root of 2083100881 is 45641.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1880013802 = 2940006901.

It can be written as a sum of positive squares in only one way, i.e., 972878481 + 1110222400 = 31191^2 + 33320^2 .

It is not a de Polignac number, because 2083100881 - 27 = 2083100753 is a prime.

It is a super-2 number, since 2×20831008812 = 8678618560845952322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2083100801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 22821 + ... + 68461.

Almost surely, 22083100881 is an apocalyptic number.

2083100881 is the 45641-st square number.

2083100881 is the 22821-st centered octagonal number.

It is an amenable number.

2083100881 is a deficient number, since it is larger than the sum of its proper divisors (45642).

2083100881 is an frugal number, since it uses more digits than its factorization.

2083100881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91282 (or 45641 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The cubic root of 2083100881 is about 1277.1348841116.

The spelling of 2083100881 in words is "two billion, eighty-three million, one hundred thousand, eight hundred eighty-one".

Divisors: 1 45641 2083100881