1392653690 has 16 divisors (see below), whose sum is σ = 2511239328. Its totient is φ = 556069776.

The previous prime is 1392653687. The next prime is 1392653699. The reversal of 1392653690 is 963562931.

It is a super-2 number, since 2×1392653690² = 3878968600541232200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1392653699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118052 + ... + 129311.

It is an arithmetic number, because the mean of its divisors is an integer number (156952458).

Almost surely, 2^1392653690 is an apocalyptic number.

1392653690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1392653690 is a deficient number, since it is larger than the sum of its proper divisors (1118585638).

1392653690 is a wasteful number, since it uses less digits than its factorization.

1392653690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247933.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 1392653690 is about 37318.2755496553. The cubic root of 1392653690 is about 1116.7287867227.

The spelling of 1392653690 in words is "one billion, three hundred ninety-two million, six hundred fifty-three thousand, six hundred ninety".