972678159 has 8 divisors (see below), whose sum is σ = 1441004720. Its totient is φ = 648452088.

The previous prime is 972678143. The next prime is 972678173. The reversal of 972678159 is 951876279.

It is not a de Polignac number, because 972678159 - 2⁴ = 972678143 is a prime.

It is a super-2 number, since 2×972678159² = 1892205601991258562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972678199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18012532 + ... + 18012585.

It is an arithmetic number, because the mean of its divisors is an integer number (180125590).

Almost surely, 2^972678159 is an apocalyptic number.

972678159 is a deficient number, since it is larger than the sum of its proper divisors (468326561).

972678159 is a wasteful number, since it uses less digits than its factorization.

972678159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36025126 (or 36025120 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 972678159 is about 31187.7886199070. The cubic root of 972678159 is about 990.8084947421.

The spelling of 972678159 in words is "nine hundred seventy-two million, six hundred seventy-eight thousand, one hundred fifty-nine".