381350988 has 18 divisors (see below), whose sum is σ = 963970644. Its totient is φ = 127116984.

The previous prime is 381350947. The next prime is 381351049. The reversal of 381350988 is 889053183.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×381350988² = 290857152097152288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5296506 + ... + 5296577.

Almost surely, 2^381350988 is an apocalyptic number.

It is an amenable number.

381350988 is an abundant number, since it is smaller than the sum of its proper divisors (582619656).

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

381350988 is a wasteful number, since it uses less digits than its factorization.

381350988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10593093 (or 10593088 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 381350988 is about 19528.2100562238. The cubic root of 381350988 is about 725.1729990646.

The spelling of 381350988 in words is "three hundred eighty-one million, three hundred fifty thousand, nine hundred eighty-eight".