1390253458 has 16 divisors (see below), whose sum is σ = 2293765920. Its totient is φ = 631932180.

The previous prime is 1390253443. The next prime is 1390253477. The reversal of 1390253458 is 8543520931.

It is a self number, because there is not a number n which added to its sum of digits gives 1390253458.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258468 + ... + 263791.

It is an arithmetic number, because the mean of its divisors is an integer number (143360370).

Almost surely, 2^1390253458 is an apocalyptic number.

1390253458 is a deficient number, since it is larger than the sum of its proper divisors (903512462).

1390253458 is an equidigital number, since it uses as much as digits as its factorization.

1390253458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522294 (or 522272 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1390253458 is about 37286.1027461975. The cubic root of 1390253458 is about 1116.0868588802.

The spelling of 1390253458 in words is "one billion, three hundred ninety million, two hundred fifty-three thousand, four hundred fifty-eight".