1956798313 has 2 divisors, whose sum is σ = 1956798314. Its totient is φ = 1956798312.

The previous prime is 1956798299. The next prime is 1956798343. The reversal of 1956798313 is 3138976591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1646087184 + 310711129 = 40572^2 + 17627^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956798313 - 2²⁹ = 1419927401 is a prime.

It is a super-3 number, since 3×1956798313³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1956798343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978399156 + 978399157.

It is an arithmetic number, because the mean of its divisors is an integer number (978399157).

Almost surely, 2^1956798313 is an apocalyptic number.

It is an amenable number.

1956798313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956798313 is an equidigital number, since it uses as much as digits as its factorization.

1956798313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The square root of 1956798313 is about 44235.7130947383. The cubic root of 1956798313 is about 1250.7831493459.

The spelling of 1956798313 in words is "one billion, nine hundred fifty-six million, seven hundred ninety-eight thousand, three hundred thirteen".