381856332 has 48 divisors (see below), whose sum is σ = 1046771712. Its totient is φ = 106812480.

The previous prime is 381856289. The next prime is 381856337. The reversal of 381856332 is 233658183.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (381856337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109548 + ... + 112979.

It is an arithmetic number, because the mean of its divisors is an integer number (21807744).

Almost surely, 2^381856332 is an apocalyptic number.

It is an amenable number.

381856332 is an abundant number, since it is smaller than the sum of its proper divisors (664915380).

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

381856332 is a wasteful number, since it uses less digits than its factorization.

381856332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222558 (or 222556 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 381856332 is about 19541.1445928840. The cubic root of 381856332 is about 725.4931766117.

The spelling of 381856332 in words is "three hundred eighty-one million, eight hundred fifty-six thousand, three hundred thirty-two".