971810972 has 24 divisors (see below), whose sum is σ = 1856814960. Its totient is φ = 441365760.

The previous prime is 971810953. The next prime is 971810977. The reversal of 971810972 is 279018179.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971810977) 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, 48554 + ... + 65582.

It is an arithmetic number, because the mean of its divisors is an integer number (77367290).

Almost surely, 2^971810972 is an apocalyptic number.

It is an amenable number.

971810972 is a deficient number, since it is larger than the sum of its proper divisors (885003988).

971810972 is a wasteful number, since it uses less digits than its factorization.

971810972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341 (or 18339 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 971810972 is about 31173.8828508737. The cubic root of 971810972 is about 990.5139568527.

The spelling of 971810972 in words is "nine hundred seventy-one million, eight hundred ten thousand, nine hundred seventy-two".