1390013512 has 16 divisors (see below), whose sum is σ = 2617659900. Its totient is φ = 691970880.

The previous prime is 1390013501. The next prime is 1390013519. The reversal of 1390013512 is 2153100931.

It can be written as a sum of positive squares in 2 ways, for example, as 892455876 + 497557636 = 29874^2 + 22306^2 .

It is not an unprimeable number, because it can be changed into a prime (1390013519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377539 + ... + 381202.

Almost surely, 2^1390013512 is an apocalyptic number.

It is an amenable number.

1390013512 is a deficient number, since it is larger than the sum of its proper divisors (1227646388).

1390013512 is a wasteful number, since it uses less digits than its factorization.

1390013512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758976 (or 758972 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1390013512 is about 37282.8849742077. The cubic root of 1390013512 is about 1116.0226461320.

The spelling of 1390013512 in words is "one billion, three hundred ninety million, thirteen thousand, five hundred twelve".