318938797 has 4 divisors (see below), whose sum is σ = 319605120. Its totient is φ = 318272476.

The previous prime is 318938791. The next prime is 318938801. The reversal of 318938797 is 797839813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 797839813 = 1013 ⋅787601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318938797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318938791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332443 + ... + 333400.

It is an arithmetic number, because the mean of its divisors is an integer number (79901280).

Almost surely, 2^318938797 is an apocalyptic number.

It is an amenable number.

318938797 is a deficient number, since it is larger than the sum of its proper divisors (666323).

318938797 is an equidigital number, since it uses as much as digits as its factorization.

318938797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666322.

The product of its digits is 2286144, while the sum is 55.

The square root of 318938797 is about 17858.8576622358. The cubic root of 318938797 is about 683.2334448215.

The spelling of 318938797 in words is "three hundred eighteen million, nine hundred thirty-eight thousand, seven hundred ninety-seven".