38111913 has 24 divisors (see below), whose sum is σ = 63784448. Its totient is φ = 21477312.

The previous prime is 38111881. The next prime is 38111917. The reversal of 38111913 is 31911183.

It is a happy number.

It is not a de Polignac number, because 38111913 - 2⁵ = 38111881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38111917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456 + ... + 8742.

Almost surely, 2^38111913 is an apocalyptic number.

It is an amenable number.

38111913 is a deficient number, since it is larger than the sum of its proper divisors (25672535).

38111913 is a wasteful number, since it uses less digits than its factorization.

38111913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373 (or 8370 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 38111913 is about 6173.4846723710. The cubic root of 38111913 is about 336.5272599747.

The spelling of 38111913 in words is "thirty-eight million, one hundred eleven thousand, nine hundred thirteen".