3109991836 has 24 divisors (see below), whose sum is σ = 6229633536. Its totient is φ = 1330785840.

The previous prime is 3109991791. The next prime is 3109991837. The reversal of 3109991836 is 6381999013.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3109991836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3109991837) 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 7 ways as a sum of consecutive naturals, for example, 67720 + ... + 103951.

It is an arithmetic number, because the mean of its divisors is an integer number (259568064).

Almost surely, 2^3109991836 is an apocalyptic number.

It is an amenable number.

3109991836 is an abundant number, since it is smaller than the sum of its proper divisors (3119641700).

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

3109991836 is a wasteful number, since it uses less digits than its factorization.

3109991836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172329 (or 172327 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 3109991836 is about 55767.3007774269. The cubic root of 3109991836 is about 1459.6646249126.

The spelling of 3109991836 in words is "three billion, one hundred nine million, nine hundred ninety-one thousand, eight hundred thirty-six".