381549936 has 40 divisors (see below), whose sum is σ = 1009716624. Its totient is φ = 124080640.

The previous prime is 381549919. The next prime is 381549979. The reversal of 381549936 is 639945183.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94971 + ... + 98906.

Almost surely, 2^381549936 is an apocalyptic number.

It is an amenable number.

381549936 is an abundant number, since it is smaller than the sum of its proper divisors (628166688).

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

381549936 is a wasteful number, since it uses less digits than its factorization.

381549936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193929 (or 193923 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 381549936 is about 19533.3032536742. The cubic root of 381549936 is about 725.2990829445.

The spelling of 381549936 in words is "three hundred eighty-one million, five hundred forty-nine thousand, nine hundred thirty-six".