3165306881 has 12 divisors (see below), whose sum is σ = 3662341200. Its totient is φ = 2726099640.

The previous prime is 3165306827. The next prime is 3165306889. The reversal of 3165306881 is 1886035613.

It is not a de Polignac number, because 3165306881 - 2¹⁸ = 3165044737 is a prime.

It is a super-2 number, since 2×3165306881² = 20038335301811896322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3165306889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686111 + ... + 690708.

It is an arithmetic number, because the mean of its divisors is an integer number (305195100).

Almost surely, 2^3165306881 is an apocalyptic number.

It is an amenable number.

3165306881 is a deficient number, since it is larger than the sum of its proper divisors (497034319).

3165306881 is a wasteful number, since it uses less digits than its factorization.

3165306881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376860 (or 1376849 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 3165306881 is about 56261.0600771084. The cubic root of 3165306881 is about 1468.2677979680.

The spelling of 3165306881 in words is "three billion, one hundred sixty-five million, three hundred six thousand, eight hundred eighty-one".