381863016 has 48 divisors (see below), whose sum is σ = 1049661600. Its totient is φ = 125386272.

The previous prime is 381863003. The next prime is 381863023. The reversal of 381863016 is 610368183.

381863016 is a `hidden beast` number, since 3 + 8 + 1 + 8 + 630 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34756 + ... + 44403.

It is an arithmetic number, because the mean of its divisors is an integer number (21867950).

Almost surely, 2^381863016 is an apocalyptic number.

381863016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381863016 is an abundant number, since it is smaller than the sum of its proper divisors (667798584).

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

381863016 is a wasteful number, since it uses less digits than its factorization.

381863016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79238 (or 79231 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 381863016 is about 19541.3156158944. The cubic root of 381863016 is about 725.4974095895.

The spelling of 381863016 in words is "three hundred eighty-one million, eight hundred sixty-three thousand, sixteen".