381889994 has 8 divisors (see below), whose sum is σ = 572920608. Its totient is φ = 190916460.

The previous prime is 381889973. The next prime is 381890053. The reversal of 381889994 is 499988183.

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

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, 12509 + ... + 30335.

It is an arithmetic number, because the mean of its divisors is an integer number (71615076).

Almost surely, 2^381889994 is an apocalyptic number.

381889994 is a deficient number, since it is larger than the sum of its proper divisors (191030614).

381889994 is a wasteful number, since it uses less digits than its factorization.

381889994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28540.

The product of its digits is 4478976, while the sum is 59.

The square root of 381889994 is about 19542.0058847601. The cubic root of 381889994 is about 725.5144942572.

The spelling of 381889994 in words is "three hundred eighty-one million, eight hundred eighty-nine thousand, nine hundred ninety-four".