8231938155 has 48 divisors (see below), whose sum is σ = 16747833024. Its totient is φ = 3661459200.

The previous prime is 8231938153. The next prime is 8231938159. The reversal of 8231938155 is 5518391328.

It is not a de Polignac number, because 8231938155 - 2¹ = 8231938153 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8231938155.

It is not an unprimeable number, because it can be changed into a prime (8231938153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 341496 + ... + 364805.

It is an arithmetic number, because the mean of its divisors is an integer number (348913188).

Almost surely, 2^8231938155 is an apocalyptic number.

8231938155 is an abundant number, since it is smaller than the sum of its proper divisors (8515894869).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8231938155 is a wasteful number, since it uses less digits than its factorization.

8231938155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706356 (or 706353 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 8231938155 is about 90730.0289595457. The cubic root of 8231938155 is about 2019.1443419594.

The spelling of 8231938155 in words is "eight billion, two hundred thirty-one million, nine hundred thirty-eight thousand, one hundred fifty-five".