381312894 has 16 divisors (see below), whose sum is σ = 762894720. Its totient is φ = 127059480.

The previous prime is 381312889. The next prime is 381312913. The reversal of 381312894 is 498213183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10447 + ... + 29525.

It is an arithmetic number, because the mean of its divisors is an integer number (47680920).

Almost surely, 2^381312894 is an apocalyptic number.

381312894 is an abundant number, since it is smaller than the sum of its proper divisors (381581826).

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

381312894 is a wasteful number, since it uses less digits than its factorization.

381312894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22415.

The product of its digits is 41472, while the sum is 39.

The square root of 381312894 is about 19527.2346736552. The cubic root of 381312894 is about 725.1488518782.

The spelling of 381312894 in words is "three hundred eighty-one million, three hundred twelve thousand, eight hundred ninety-four".