972744165 has 24 divisors (see below), whose sum is σ = 1785273048. Its totient is φ = 488279040.

The previous prime is 972744127. The next prime is 972744173. The reversal of 972744165 is 561447279.

It can be written as a sum of positive squares in 4 ways, for example, as 447830244 + 524913921 = 21162^2 + 22911^2 .

It is not a de Polignac number, because 972744165 - 2²² = 968549861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 972744165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635016 + ... + 636545.

It is an arithmetic number, because the mean of its divisors is an integer number (74386377).

Almost surely, 2^972744165 is an apocalyptic number.

It is an amenable number.

972744165 is a deficient number, since it is larger than the sum of its proper divisors (812528883).

972744165 is a wasteful number, since it uses less digits than its factorization.

972744165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271589 (or 1271586 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 972744165 is about 31188.8468045871. The cubic root of 972744165 is about 990.8309063437.

The spelling of 972744165 in words is "nine hundred seventy-two million, seven hundred forty-four thousand, one hundred sixty-five".