381915416 has 16 divisors (see below), whose sum is σ = 721731840. Its totient is φ = 189453600.

The previous prime is 381915389. The next prime is 381915419. The reversal of 381915416 is 614519183.

It is a self number, because there is not a number n which added to its sum of digits gives 381915416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381915419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186935 + ... + 188966.

It is an arithmetic number, because the mean of its divisors is an integer number (45108240).

Almost surely, 2^381915416 is an apocalyptic number.

It is an amenable number.

381915416 is a deficient number, since it is larger than the sum of its proper divisors (339816424).

381915416 is a wasteful number, since it uses less digits than its factorization.

381915416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376034 (or 376030 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 381915416 is about 19542.6563189347. The cubic root of 381915416 is about 725.5305928026.

The spelling of 381915416 in words is "three hundred eighty-one million, nine hundred fifteen thousand, four hundred sixteen".