969736831981 has 2 divisors, whose sum is σ = 969736831982. Its totient is φ = 969736831980.

The previous prime is 969736831949. The next prime is 969736832039. The reversal of 969736831981 is 189138637969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862234816356 + 107502015625 = 928566^2 + 327875^2 .

It is a cyclic number.

It is not a de Polignac number, because 969736831981 - 2⁵ = 969736831949 is a prime.

It is a super-2 number, since 2×969736831981² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 969736831981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969736831081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484868415990 + 484868415991.

It is an arithmetic number, because the mean of its divisors is an integer number (484868415991).

Almost surely, 2^969736831981 is an apocalyptic number.

It is an amenable number.

969736831981 is a deficient number, since it is larger than the sum of its proper divisors (1).

969736831981 is an equidigital number, since it uses as much as digits as its factorization.

969736831981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105815808, while the sum is 70.

The spelling of 969736831981 in words is "nine hundred sixty-nine billion, seven hundred thirty-six million, eight hundred thirty-one thousand, nine hundred eighty-one".