971801136 has 60 divisors (see below), whose sum is σ = 2813488080. Its totient is φ = 312762240.

The previous prime is 971801123. The next prime is 971801137. The reversal of 971801136 is 631108179.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 971801136.

It is not an unprimeable number, because it can be changed into a prime (971801137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112180 + ... + 120531.

It is an arithmetic number, because the mean of its divisors is an integer number (46891468).

Almost surely, 2^971801136 is an apocalyptic number.

It is an amenable number.

971801136 is an abundant number, since it is smaller than the sum of its proper divisors (1841686944).

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

971801136 is a wasteful number, since it uses less digits than its factorization.

971801136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232754 (or 232745 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 971801136 is about 31173.7250902102. The cubic root of 971801136 is about 990.5106150751.

The spelling of 971801136 in words is "nine hundred seventy-one million, eight hundred one thousand, one hundred thirty-six".