3191249916 has 18 divisors (see below), whose sum is σ = 8066770712. Its totient is φ = 1063749960.

The previous prime is 3191249891. The next prime is 3191249921. The reversal of 3191249916 is 6199421913.

3191249916 is a `hidden beast` number, since 319 + 1 + 249 + 91 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44322880 + ... + 44322951.

Almost surely, 2^3191249916 is an apocalyptic number.

3191249916 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3191249916 is an abundant number, since it is smaller than the sum of its proper divisors (4875520796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3191249916 is a wasteful number, since it uses less digits than its factorization.

3191249916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88645841 (or 88645836 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 3191249916 is about 56491.1490058398. The cubic root of 3191249916 is about 1472.2682239786.

The spelling of 3191249916 in words is "three billion, one hundred ninety-one million, two hundred forty-nine thousand, nine hundred sixteen".