381798636 has 24 divisors (see below), whose sum is σ = 891179520. Its totient is φ = 127221072.

The previous prime is 381798623. The next prime is 381798653. The reversal of 381798636 is 636897183.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62845 + ... + 68651.

It is an arithmetic number, because the mean of its divisors is an integer number (37132480).

Almost surely, 2^381798636 is an apocalyptic number.

It is an amenable number.

381798636 is an abundant number, since it is smaller than the sum of its proper divisors (509380884).

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

381798636 is a wasteful number, since it uses less digits than its factorization.

381798636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293 (or 11291 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 381798636 is about 19539.6682673990. The cubic root of 381798636 is about 725.4566356764.

The spelling of 381798636 in words is "three hundred eighty-one million, seven hundred ninety-eight thousand, six hundred thirty-six".