972818538 has 24 divisors (see below), whose sum is σ = 1953016992. Its totient is φ = 323046144.

The previous prime is 972818537. The next prime is 972818611. The reversal of 972818538 is 835818279.

972818538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (972818531) 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, 1685706 + ... + 1686282.

It is an arithmetic number, because the mean of its divisors is an integer number (81375708).

Almost surely, 2^972818538 is an apocalyptic number.

972818538 is an abundant number, since it is smaller than the sum of its proper divisors (980198454).

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

972818538 is an equidigital number, since it uses as much as digits as its factorization.

972818538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646 (or 1069 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 972818538 is about 31190.0390830149. The cubic root of 972818538 is about 990.8561576522.

The spelling of 972818538 in words is "nine hundred seventy-two million, eight hundred eighteen thousand, five hundred thirty-eight".