381898680 has 64 divisors (see below), whose sum is σ = 1185213600. Its totient is φ = 98327040.

The previous prime is 381898669. The next prime is 381898691. The reversal of 381898680 is 86898183.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (381898669) and next prime (381898691).

It is a congruent number.

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, 51391 + ... + 58350.

Almost surely, 2^381898680 is an apocalyptic number.

381898680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381898680 is an abundant number, since it is smaller than the sum of its proper divisors (803314920).

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

381898680 is a wasteful number, since it uses less digits than its factorization.

381898680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109784 (or 109780 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 381898680 is about 19542.2281227090. The cubic root of 381898680 is about 725.5199947689.

The spelling of 381898680 in words is "three hundred eighty-one million, eight hundred ninety-eight thousand, six hundred eighty".