381948878 has 8 divisors (see below), whose sum is σ = 573494160. Its totient is φ = 190784160.

The previous prime is 381948863. The next prime is 381948883. The reversal of 381948878 is 878849183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92618 + ... + 96653.

It is an arithmetic number, because the mean of its divisors is an integer number (71686770).

Almost surely, 2^381948878 is an apocalyptic number.

381948878 is a deficient number, since it is larger than the sum of its proper divisors (191545282).

381948878 is a wasteful number, since it uses less digits than its factorization.

381948878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190282.

The product of its digits is 3096576, while the sum is 56.

The square root of 381948878 is about 19543.5124274016. The cubic root of 381948878 is about 725.5517816093.

The spelling of 381948878 in words is "three hundred eighty-one million, nine hundred forty-eight thousand, eight hundred seventy-eight".