381018464 has 12 divisors (see below), whose sum is σ = 750130164. Its totient is φ = 190509216.

The previous prime is 381018413. The next prime is 381018493. The reversal of 381018464 is 464810183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5953382 + ... + 5953445.

It is an arithmetic number, because the mean of its divisors is an integer number (62510847).

Almost surely, 2^381018464 is an apocalyptic number.

It is an amenable number.

381018464 is a deficient number, since it is larger than the sum of its proper divisors (369111700).

381018464 is a wasteful number, since it uses less digits than its factorization.

381018464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906837 (or 11906829 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 381018464 is about 19519.6942599007. The cubic root of 381018464 is about 724.9621630670.

The spelling of 381018464 in words is "three hundred eighty-one million, eighteen thousand, four hundred sixty-four".