381974872 has 16 divisors (see below), whose sum is σ = 716443560. Its totient is φ = 190923264.

The previous prime is 381974867. The next prime is 381974897. The reversal of 381974872 is 278479183.

381974872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25528 + ... + 37624.

Almost surely, 2^381974872 is an apocalyptic number.

It is an amenable number.

381974872 is a deficient number, since it is larger than the sum of its proper divisors (334468688).

381974872 is a wasteful number, since it uses less digits than its factorization.

381974872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16050 (or 16046 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 381974872 is about 19544.1774449579. The cubic root of 381974872 is about 725.5682406751.

The spelling of 381974872 in words is "three hundred eighty-one million, nine hundred seventy-four thousand, eight hundred seventy-two".