1397307138 has 16 divisors (see below), whose sum is σ = 2795070720. Its totient is φ = 465692976.

The previous prime is 1397307097. The next prime is 1397307143. The reversal of 1397307138 is 8317037931.

It is a self number, because there is not a number n which added to its sum of digits gives 1397307138.

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, 30831 + ... + 61197.

It is an arithmetic number, because the mean of its divisors is an integer number (174691920).

Almost surely, 2^1397307138 is an apocalyptic number.

1397307138 is an abundant number, since it is smaller than the sum of its proper divisors (1397763582).

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

1397307138 is a wasteful number, since it uses less digits than its factorization.

1397307138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38041.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 1397307138 is about 37380.5716649706. The cubic root of 1397307138 is about 1117.9712257767.

The spelling of 1397307138 in words is "one billion, three hundred ninety-seven million, three hundred seven thousand, one hundred thirty-eight".