3161661015 has 32 divisors (see below), whose sum is σ = 5226504192. Its totient is φ = 1630368000.

The previous prime is 3161661011. The next prime is 3161661017. The reversal of 3161661015 is 5101661613.

It is not a de Polignac number, because 3161661015 - 2² = 3161661011 is a prime.

It is a super-2 number, since 2×3161661015² = 19992200747541660450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161661011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686370 + ... + 690960.

It is an arithmetic number, because the mean of its divisors is an integer number (163328256).

Almost surely, 2^3161661015 is an apocalyptic number.

3161661015 is a deficient number, since it is larger than the sum of its proper divisors (2064843177).

3161661015 is a wasteful number, since it uses less digits than its factorization.

3161661015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 3161661015 is about 56228.6494146890. The cubic root of 3161661015 is about 1467.7038543090.

The spelling of 3161661015 in words is "three billion, one hundred sixty-one million, six hundred sixty-one thousand, fifteen".