381383910 has 64 divisors (see below), whose sum is σ = 1019980800. Its totient is φ = 101406816.

The previous prime is 381383909. The next prime is 381383939. The reversal of 381383910 is 19383183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100467 + ... + 104193.

It is an arithmetic number, because the mean of its divisors is an integer number (15937200).

Almost surely, 2^381383910 is an apocalyptic number.

381383910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 381383910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509990400).

381383910 is an abundant number, since it is smaller than the sum of its proper divisors (638596890).

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

381383910 is a wasteful number, since it uses less digits than its factorization.

381383910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122 (or 4116 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 381383910 is about 19529.0529724306. The cubic root of 381383910 is about 725.1938665062.

The spelling of 381383910 in words is "three hundred eighty-one million, three hundred eighty-three thousand, nine hundred ten".