971981164 has 24 divisors (see below), whose sum is σ = 2120686848. Its totient is φ = 378693840.

The previous prime is 971981147. The next prime is 971981167. The reversal of 971981164 is 461189179.

It is not an unprimeable number, because it can be changed into a prime (971981167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577584 + ... + 1578199.

It is an arithmetic number, because the mean of its divisors is an integer number (88361952).

Almost surely, 2^971981164 is an apocalyptic number.

It is an amenable number.

971981164 is an abundant number, since it is smaller than the sum of its proper divisors (1148705684).

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

971981164 is a wasteful number, since it uses less digits than its factorization.

971981164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155805 (or 3155803 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The square root of 971981164 is about 31176.6124522854. The cubic root of 971981164 is about 990.5717759540.

The spelling of 971981164 in words is "nine hundred seventy-one million, nine hundred eighty-one thousand, one hundred sixty-four".