388738113 has 4 divisors (see below), whose sum is σ = 518317488. Its totient is φ = 259158740.

The previous prime is 388738039. The next prime is 388738117. The reversal of 388738113 is 311837883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 388738113 - 2¹³ = 388729921 is a prime.

It is a super-2 number, since 2×388738113² = 302234640997601538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388738117) 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, 64789683 + ... + 64789688.

It is an arithmetic number, because the mean of its divisors is an integer number (129579372).

Almost surely, 2^388738113 is an apocalyptic number.

It is an amenable number.

388738113 is a deficient number, since it is larger than the sum of its proper divisors (129579375).

388738113 is a wasteful number, since it uses less digits than its factorization.

388738113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129579374.

The product of its digits is 96768, while the sum is 42.

The square root of 388738113 is about 19716.4427065330. The cubic root of 388738113 is about 729.8255121840.

The spelling of 388738113 in words is "three hundred eighty-eight million, seven hundred thirty-eight thousand, one hundred thirteen".