938021137 has 4 divisors (see below), whose sum is σ = 947691556. Its totient is φ = 928350720.

The previous prime is 938021129. The next prime is 938021143. The reversal of 938021137 is 731120839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731120839 = 127 ⋅5756857.

It can be written as a sum of positive squares in 2 ways, for example, as 367718976 + 570302161 = 19176^2 + 23881^2 .

It is a cyclic number.

It is not a de Polignac number, because 938021137 - 2³ = 938021129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938021837) 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, 4835064 + ... + 4835257.

It is an arithmetic number, because the mean of its divisors is an integer number (236922889).

Almost surely, 2^938021137 is an apocalyptic number.

938021137 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

938021137 is a deficient number, since it is larger than the sum of its proper divisors (9670419).

938021137 is an equidigital number, since it uses as much as digits as its factorization.

938021137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9670418.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 938021137 is about 30627.1307340404. The cubic root of 938021137 is about 978.8982262445.

The spelling of 938021137 in words is "nine hundred thirty-eight million, twenty-one thousand, one hundred thirty-seven".