3145390872 has 64 divisors (see below), whose sum is σ = 8914080000. Its totient is φ = 916873344.

The previous prime is 3145390819. The next prime is 3145390879. The reversal of 3145390872 is 2780935413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145390879) 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 15 ways as a sum of consecutive naturals, for example, 259372 + ... + 271227.

It is an arithmetic number, because the mean of its divisors is an integer number (139282500).

Almost surely, 2^3145390872 is an apocalyptic number.

It is an amenable number.

3145390872 is an abundant number, since it is smaller than the sum of its proper divisors (5768689128).

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

3145390872 is a wasteful number, since it uses less digits than its factorization.

3145390872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530640 (or 530636 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 3145390872 is about 56083.7843944219. The cubic root of 3145390872 is about 1465.1818854962.

The spelling of 3145390872 in words is "three billion, one hundred forty-five million, three hundred ninety thousand, eight hundred seventy-two".