972642618 has 24 divisors (see below), whose sum is σ = 2138848608. Its totient is φ = 319374792.

The previous prime is 972642613. The next prime is 972642637. The reversal of 972642618 is 816246279.

It is a happy number.

972642618 is a `hidden beast` number, since 9 + 7 + 26 + 4 + 2 + 618 = 666.

It is not an unprimeable number, because it can be changed into a prime (972642613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402046 + ... + 404457.

It is an arithmetic number, because the mean of its divisors is an integer number (89118692).

Almost surely, 2^972642618 is an apocalyptic number.

972642618 is an abundant number, since it is smaller than the sum of its proper divisors (1166205990).

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

972642618 is a wasteful number, since it uses less digits than its factorization.

972642618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806578 (or 806575 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 972642618 is about 31187.2188243838. The cubic root of 972642618 is about 990.7964267717.

The spelling of 972642618 in words is "nine hundred seventy-two million, six hundred forty-two thousand, six hundred eighteen".