1397551368 has 32 divisors (see below), whose sum is σ = 3699401760. Its totient is φ = 438447360.

The previous prime is 1397551339. The next prime is 1397551381. The reversal of 1397551368 is 8631557931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712278 + ... + 1713093.

It is an arithmetic number, because the mean of its divisors is an integer number (115606305).

Almost surely, 2^1397551368 is an apocalyptic number.

It is an amenable number.

1397551368 is an abundant number, since it is smaller than the sum of its proper divisors (2301850392).

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

1397551368 is a wasteful number, since it uses less digits than its factorization.

1397551368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425397 (or 3425393 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 1397551368 is about 37383.8383262072. The cubic root of 1397551368 is about 1118.0363572949.

The spelling of 1397551368 in words is "one billion, three hundred ninety-seven million, five hundred fifty-one thousand, three hundred sixty-eight".