381970316 has 96 divisors (see below), whose sum is σ = 853493760. Its totient is φ = 145569024.

The previous prime is 381970301. The next prime is 381970327. The reversal of 381970316 is 613079183.

It is a self number, because there is not a number n which added to its sum of digits gives 381970316.

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, 1419830 + ... + 1420098.

It is an arithmetic number, because the mean of its divisors is an integer number (8890560).

Almost surely, 2^381970316 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 381970316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426746880).

381970316 is an abundant number, since it is smaller than the sum of its proper divisors (471523444).

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

381970316 is a wasteful number, since it uses less digits than its factorization.

381970316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 381970316 is about 19544.0608881573. The cubic root of 381970316 is about 725.5653559286.

The spelling of 381970316 in words is "three hundred eighty-one million, nine hundred seventy thousand, three hundred sixteen".