388969871091 has 16 divisors (see below), whose sum is σ = 520365101568. Its totient is φ = 258444172800.

The previous prime is 388969871077. The next prime is 388969871117. The reversal of 388969871091 is 190178969883.

It is not a de Polignac number, because 388969871091 - 2⁷ = 388969870963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388969871051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8037930 + ... + 8086176.

It is an arithmetic number, because the mean of its divisors is an integer number (32522818848).

Almost surely, 2^388969871091 is an apocalyptic number.

388969871091 is a deficient number, since it is larger than the sum of its proper divisors (131395230477).

388969871091 is a wasteful number, since it uses less digits than its factorization.

388969871091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57202.

The product of its (nonzero) digits is 47029248, while the sum is 69.

The spelling of 388969871091 in words is "three hundred eighty-eight billion, nine hundred sixty-nine million, eight hundred seventy-one thousand, ninety-one".