381699774 has 12 divisors (see below), whose sum is σ = 827016216. Its totient is φ = 127233252.

The previous prime is 381699757. The next prime is 381699803. The reversal of 381699774 is 477996183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381699774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10602754 + ... + 10602789.

It is an arithmetic number, because the mean of its divisors is an integer number (68918018).

Almost surely, 2^381699774 is an apocalyptic number.

381699774 is an abundant number, since it is smaller than the sum of its proper divisors (445316442).

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

381699774 is a wasteful number, since it uses less digits than its factorization.

381699774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21205551 (or 21205548 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 381699774 is about 19537.1383267868. The cubic root of 381699774 is about 725.3940142852.

The spelling of 381699774 in words is "three hundred eighty-one million, six hundred ninety-nine thousand, seven hundred seventy-four".