381327988 has 6 divisors (see below), whose sum is σ = 667323986. Its totient is φ = 190663992.

The previous prime is 381327977. The next prime is 381328009. The reversal of 381327988 is 889723183.

It can be written as a sum of positive squares in only one way, i.e., 353891344 + 27436644 = 18812^2 + 5238^2 .

It is a super-2 number, since 2×381327988² = 290822068864256288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47665995 + ... + 47666002.

Almost surely, 2^381327988 is an apocalyptic number.

It is an amenable number.

381327988 is a deficient number, since it is larger than the sum of its proper divisors (285995998).

381327988 is a wasteful number, since it uses less digits than its factorization.

381327988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95332001 (or 95331999 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 381327988 is about 19527.6211556861. The cubic root of 381327988 is about 725.1584199194.

The spelling of 381327988 in words is "three hundred eighty-one million, three hundred twenty-seven thousand, nine hundred eighty-eight".