38819131 has 6 divisors (see below), whose sum is σ = 42035100. Its totient is φ = 35832888.

The previous prime is 38819117. The next prime is 38819149. The reversal of 38819131 is 13191883.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-38819131 is a prime.

It is a super-2 number, since 2×38819131² = 3013849863190322, which contains 22 as substring.

It is the 6231-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38819531) by changing a digit.

It is a nontrivial repunit in base 6230.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114681 + ... + 115018.

It is an arithmetic number, because the mean of its divisors is an integer number (7005850).

Almost surely, 2^38819131 is an apocalyptic number.

38819131 is a deficient number, since it is larger than the sum of its proper divisors (3215969).

38819131 is a wasteful number, since it uses less digits than its factorization.

38819131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229725 (or 229712 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 38819131 is about 6230.5000601878. The cubic root of 38819131 is about 338.5960881756.

The spelling of 38819131 in words is "thirty-eight million, eight hundred nineteen thousand, one hundred thirty-one".