381743976 has 64 divisors (see below), whose sum is σ = 1012996800. Its totient is φ = 119467008.

The previous prime is 381743927. The next prime is 381743987. The reversal of 381743976 is 679347183.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212490 + ... + 214278.

It is an arithmetic number, because the mean of its divisors is an integer number (15828075).

Almost surely, 2^381743976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381743976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506498400).

381743976 is an abundant number, since it is smaller than the sum of its proper divisors (631252824).

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

381743976 is a wasteful number, since it uses less digits than its factorization.

381743976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2338 (or 2334 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 381743976 is about 19538.2695241928. The cubic root of 381743976 is about 725.4220141521.

The spelling of 381743976 in words is "three hundred eighty-one million, seven hundred forty-three thousand, nine hundred seventy-six".