938775813 has 8 divisors (see below), whose sum is σ = 1252978368. Its totient is φ = 625211904.

The previous prime is 938775781. The next prime is 938775829. The reversal of 938775813 is 318577839.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 938775813 - 2⁵ = 938775781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938775113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156220 + ... + 162117.

It is an arithmetic number, because the mean of its divisors is an integer number (156622296).

Almost surely, 2^938775813 is an apocalyptic number.

It is an amenable number.

938775813 is a deficient number, since it is larger than the sum of its proper divisors (314202555).

938775813 is a wasteful number, since it uses less digits than its factorization.

938775813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319323.

The product of its digits is 1270080, while the sum is 51.

The square root of 938775813 is about 30639.4486406006. The cubic root of 938775813 is about 979.1606769643.

The spelling of 938775813 in words is "nine hundred thirty-eight million, seven hundred seventy-five thousand, eight hundred thirteen".