956789381 has 2 divisors, whose sum is σ = 956789382. Its totient is φ = 956789380.

The previous prime is 956789377. The next prime is 956789459. The reversal of 956789381 is 183987659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911496481 + 45292900 = 30191^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 956789381 - 2² = 956789377 is a prime.

It is a super-2 number, since 2×956789381² = 1830891839188726322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_48759779 and since 956789381 and 48759779 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (956789311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478394690 + 478394691.

It is an arithmetic number, because the mean of its divisors is an integer number (478394691).

Almost surely, 2^956789381 is an apocalyptic number.

It is an amenable number.

956789381 is a deficient number, since it is larger than the sum of its proper divisors (1).

956789381 is an equidigital number, since it uses as much as digits as its factorization.

956789381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 956789381 is about 30932.0122365164. The cubic root of 956789381 is about 985.3838698948.

The spelling of 956789381 in words is "nine hundred fifty-six million, seven hundred eighty-nine thousand, three hundred eighty-one".