956020981 has 2 divisors, whose sum is σ = 956020982. Its totient is φ = 956020980.

The previous prime is 956020979. The next prime is 956020991. The reversal of 956020981 is 189020659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 647702500 + 308318481 = 25450^2 + 17559^2 .

It is an emirp because it is prime and its reverse (189020659) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 956020981 - 2¹ = 956020979 is a prime.

It is a super-2 number, since 2×956020981² = 1827952232224404722, which contains 22 as substring.

Together with 956020979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (956020951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478010490 + 478010491.

It is an arithmetic number, because the mean of its divisors is an integer number (478010491).

Almost surely, 2^956020981 is an apocalyptic number.

It is an amenable number.

956020981 is a deficient number, since it is larger than the sum of its proper divisors (1).

956020981 is an equidigital number, since it uses as much as digits as its factorization.

956020981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 956020981 is about 30919.5889526365. The cubic root of 956020981 is about 985.1200111446.

The spelling of 956020981 in words is "nine hundred fifty-six million, twenty thousand, nine hundred eighty-one".