1392649568 has 12 divisors (see below), whose sum is σ = 2741778900. Its totient is φ = 696324768.

The previous prime is 1392649547. The next prime is 1392649579. The reversal of 1392649568 is 8659462931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21760118 + ... + 21760181.

It is an arithmetic number, because the mean of its divisors is an integer number (228481575).

Almost surely, 2^1392649568 is an apocalyptic number.

It is an amenable number.

1392649568 is a deficient number, since it is larger than the sum of its proper divisors (1349129332).

1392649568 is an equidigital number, since it uses as much as digits as its factorization.

1392649568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43520309 (or 43520301 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 53.

The square root of 1392649568 is about 37318.2203219821. The cubic root of 1392649568 is about 1116.7276849506.

The spelling of 1392649568 in words is "one billion, three hundred ninety-two million, six hundred forty-nine thousand, five hundred sixty-eight".