381339812 has 48 divisors (see below), whose sum is σ = 772961280. Its totient is φ = 161246592.

The previous prime is 381339799. The next prime is 381339841. The reversal of 381339812 is 218933183.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980114 + ... + 980502.

It is an arithmetic number, because the mean of its divisors is an integer number (16103360).

Almost surely, 2^381339812 is an apocalyptic number.

It is an amenable number.

381339812 is an abundant number, since it is smaller than the sum of its proper divisors (391621468).

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

381339812 is a wasteful number, since it uses less digits than its factorization.

381339812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 778 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 381339812 is about 19527.9239039894. The cubic root of 381339812 is about 725.1659149410.

The spelling of 381339812 in words is "three hundred eighty-one million, three hundred thirty-nine thousand, eight hundred twelve".