938136189 has 4 divisors (see below), whose sum is σ = 1250848256. Its totient is φ = 625424124.

The previous prime is 938136187. The next prime is 938136193. The reversal of 938136189 is 981631839.

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 not a de Polignac number, because 938136189 - 2¹ = 938136187 is a prime.

It is a super-2 number, since 2×938136189² = 1760199018222887442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938136187) 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, 156356029 + ... + 156356034.

It is an arithmetic number, because the mean of its divisors is an integer number (312712064).

Almost surely, 2^938136189 is an apocalyptic number.

It is an amenable number.

938136189 is a deficient number, since it is larger than the sum of its proper divisors (312712067).

938136189 is a wasteful number, since it uses less digits than its factorization.

938136189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312712066.

The product of its digits is 279936, while the sum is 48.

The square root of 938136189 is about 30629.0089457690. The cubic root of 938136189 is about 978.9382465205.

The spelling of 938136189 in words is "nine hundred thirty-eight million, one hundred thirty-six thousand, one hundred eighty-nine".