38913123 has 4 divisors (see below), whose sum is σ = 51884168. Its totient is φ = 25942080.

The previous prime is 38913113. The next prime is 38913137. The reversal of 38913123 is 32131983.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38913123 - 2⁹ = 38912611 is a prime.

It is a super-2 number, since 2×38913123² = 3028462283226258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38913103) 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 3 ways as a sum of consecutive naturals, for example, 6485518 + ... + 6485523.

It is an arithmetic number, because the mean of its divisors is an integer number (12971042).

Almost surely, 2^38913123 is an apocalyptic number.

38913123 is a deficient number, since it is larger than the sum of its proper divisors (12971045).

38913123 is a wasteful number, since it uses less digits than its factorization.

38913123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971044.

The product of its digits is 3888, while the sum is 30.

The square root of 38913123 is about 6238.0383935978. The cubic root of 38913123 is about 338.8691465979.

The spelling of 38913123 in words is "thirty-eight million, nine hundred thirteen thousand, one hundred twenty-three".