38904772191 has 8 divisors (see below), whose sum is σ = 54603189120. Its totient is φ = 24571435032.

The previous prime is 38904772189. The next prime is 38904772199. The reversal of 38904772191 is 19127740983.

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

It is not a de Polignac number, because 38904772191 - 2¹ = 38904772189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38904772199) 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, 341269875 + ... + 341269988.

It is an arithmetic number, because the mean of its divisors is an integer number (6825398640).

Almost surely, 2^38904772191 is an apocalyptic number.

38904772191 is a deficient number, since it is larger than the sum of its proper divisors (15698416929).

38904772191 is a wasteful number, since it uses less digits than its factorization.

38904772191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682539885.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 38904772191 in words is "thirty-eight billion, nine hundred four million, seven hundred seventy-two thousand, one hundred ninety-one".