971761992 has 64 divisors (see below), whose sum is σ = 2619691200. Its totient is φ = 299381760.

The previous prime is 971761949. The next prime is 971761993. The reversal of 971761992 is 299167179.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (971761993) 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 15 ways as a sum of consecutive naturals, for example, 7293 + ... + 44684.

It is an arithmetic number, because the mean of its divisors is an integer number (40932675).

Almost surely, 2^971761992 is an apocalyptic number.

It is an amenable number.

971761992 is an abundant number, since it is smaller than the sum of its proper divisors (1647929208).

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

971761992 is a wasteful number, since it uses less digits than its factorization.

971761992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52046 (or 52042 counting only the distinct ones).

The product of its digits is 428652, while the sum is 51.

The square root of 971761992 is about 31173.0972474664. The cubic root of 971761992 is about 990.4973156916.

The spelling of 971761992 in words is "nine hundred seventy-one million, seven hundred sixty-one thousand, nine hundred ninety-two".