1312797938 has 16 divisors (see below), whose sum is σ = 1976814720. Its totient is φ = 653865696.

The previous prime is 1312797931. The next prime is 1312797943. The reversal of 1312797938 is 8397972131.

It is not an unprimeable number, because it can be changed into a prime (1312797931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735395 + ... + 737177.

It is an arithmetic number, because the mean of its divisors is an integer number (123550920).

Almost surely, 2^1312797938 is an apocalyptic number.

1312797938 is a deficient number, since it is larger than the sum of its proper divisors (664016782).

1312797938 is a wasteful number, since it uses less digits than its factorization.

1312797938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001.

The product of its digits is 571536, while the sum is 50.

The square root of 1312797938 is about 36232.5535671998. The cubic root of 1312797938 is about 1094.9626247468.

The spelling of 1312797938 in words is "one billion, three hundred twelve million, seven hundred ninety-seven thousand, nine hundred thirty-eight".