971995913 has 8 divisors (see below), whose sum is σ = 1129680960. Its totient is φ = 819018000.

The previous prime is 971995891. The next prime is 971995933. The reversal of 971995913 is 319599179.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 971995913 - 2²⁰ = 970947337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971995933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176338 + ... + 1177163.

It is an arithmetic number, because the mean of its divisors is an integer number (141210120).

Almost surely, 2^971995913 is an apocalyptic number.

It is an amenable number.

971995913 is a deficient number, since it is larger than the sum of its proper divisors (157685047).

971995913 is a wasteful number, since it uses less digits than its factorization.

971995913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353567.

The product of its digits is 688905, while the sum is 53.

The square root of 971995913 is about 31176.8489908778. The cubic root of 971995913 is about 990.5767862944.

The spelling of 971995913 in words is "nine hundred seventy-one million, nine hundred ninety-five thousand, nine hundred thirteen".