381571235388 has 72 divisors (see below), whose sum is σ = 1103489019360. Its totient is φ = 108904429440.

The previous prime is 381571235291. The next prime is 381571235477. The reversal of 381571235388 is 883532175183.

381571235388 is a `hidden beast` number, since 3 + 8 + 1 + 571 + 2 + 35 + 38 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567423 + ... + 1041686.

It is an arithmetic number, because the mean of its divisors is an integer number (15326236380).

Almost surely, 2^381571235388 is an apocalyptic number.

It is an amenable number.

381571235388 is an abundant number, since it is smaller than the sum of its proper divisors (721917783972).

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

381571235388 is a wasteful number, since it uses less digits than its factorization.

381571235388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610067 (or 1610062 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 381571235388 in words is "three hundred eighty-one billion, five hundred seventy-one million, two hundred thirty-five thousand, three hundred eighty-eight".