38375391 has 4 divisors (see below), whose sum is σ = 51167192. Its totient is φ = 25583592.

The previous prime is 38375387. The next prime is 38375399. The reversal of 38375391 is 19357383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19357383 = 3 ⋅6452461.

It is not a de Polignac number, because 38375391 - 2² = 38375387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38375399) 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, 6395896 + ... + 6395901.

It is an arithmetic number, because the mean of its divisors is an integer number (12791798).

Almost surely, 2^38375391 is an apocalyptic number.

38375391 is a deficient number, since it is larger than the sum of its proper divisors (12791801).

38375391 is a wasteful number, since it uses less digits than its factorization.

38375391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791800.

The product of its digits is 68040, while the sum is 39.

The square root of 38375391 is about 6194.7874055532. The cubic root of 38375391 is about 337.3009811556.

The spelling of 38375391 in words is "thirty-eight million, three hundred seventy-five thousand, three hundred ninety-one".