938391161 has 4 divisors (see below), whose sum is σ = 944605824. Its totient is φ = 932176500.

The previous prime is 938391131. The next prime is 938391187. The reversal of 938391161 is 161193839.

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 a de Polignac number, because none of the positive numbers 2^k-938391161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938391131) 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, 3107105 + ... + 3107406.

It is an arithmetic number, because the mean of its divisors is an integer number (236151456).

Almost surely, 2^938391161 is an apocalyptic number.

It is an amenable number.

938391161 is a deficient number, since it is larger than the sum of its proper divisors (6214663).

938391161 is a wasteful number, since it uses less digits than its factorization.

938391161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214662.

The product of its digits is 34992, while the sum is 41.

The square root of 938391161 is about 30633.1709263014. The cubic root of 938391161 is about 979.0269256256.

The spelling of 938391161 in words is "nine hundred thirty-eight million, three hundred ninety-one thousand, one hundred sixty-one".