388601116891 has 4 divisors (see below), whose sum is σ = 418493510512. Its totient is φ = 358708723272.

The previous prime is 388601116879. The next prime is 388601116907. The reversal of 388601116891 is 198611106883.

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

It is a cyclic number.

It is not a de Polignac number, because 388601116891 - 2¹⁷ = 388600985819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388601116801) 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, 14946196791 + ... + 14946196816.

It is an arithmetic number, because the mean of its divisors is an integer number (104623377628).

Almost surely, 2^388601116891 is an apocalyptic number.

388601116891 is a deficient number, since it is larger than the sum of its proper divisors (29892393621).

388601116891 is a wasteful number, since it uses less digits than its factorization.

388601116891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29892393620.

The product of its (nonzero) digits is 497664, while the sum is 52.

The spelling of 388601116891 in words is "three hundred eighty-eight billion, six hundred one million, one hundred sixteen thousand, eight hundred ninety-one".