6381988574 has 12 divisors (see below), whose sum is σ = 10366011576. Its totient is φ = 2945533032.

The previous prime is 6381988541. The next prime is 6381988621. The reversal of 6381988574 is 4758891836.

It is a happy number.

It is a congruent number.

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, 9440474 + ... + 9441149.

It is an arithmetic number, because the mean of its divisors is an integer number (863834298).

Almost surely, 2^6381988574 is an apocalyptic number.

6381988574 is a deficient number, since it is larger than the sum of its proper divisors (3984023002).

6381988574 is a wasteful number, since it uses less digits than its factorization.

6381988574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18881651 (or 18881638 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The square root of 6381988574 is about 79887.3492738368. The cubic root of 6381988574 is about 1854.8921963007.

The spelling of 6381988574 in words is "six billion, three hundred eighty-one million, nine hundred eighty-eight thousand, five hundred seventy-four".