938134957 has 4 divisors (see below), whose sum is σ = 938784736. Its totient is φ = 937485180.

The previous prime is 938134943. The next prime is 938134961. The reversal of 938134957 is 759431839.

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.

It is a cyclic number.

It is not a de Polignac number, because 938134957 - 2⁷ = 938134829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 938134957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938134997) 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, 322719 + ... + 325612.

It is an arithmetic number, because the mean of its divisors is an integer number (234696184).

Almost surely, 2^938134957 is an apocalyptic number.

It is an amenable number.

938134957 is a deficient number, since it is larger than the sum of its proper divisors (649779).

938134957 is a wasteful number, since it uses less digits than its factorization.

938134957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649778.

The product of its digits is 816480, while the sum is 49.

The square root of 938134957 is about 30628.9888341094. The cubic root of 938134957 is about 978.9378179926.

The spelling of 938134957 in words is "nine hundred thirty-eight million, one hundred thirty-four thousand, nine hundred fifty-seven".