1956961451 has 2 divisors, whose sum is σ = 1956961452. Its totient is φ = 1956961450.

The previous prime is 1956961439. The next prime is 1956961507. The reversal of 1956961451 is 1541696591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1956961451 - 2⁶ = 1956961387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1956961396 and 1956961405.

It is not a weakly prime, because it can be changed into another prime (1956961421) 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, 978480725 + 978480726.

It is an arithmetic number, because the mean of its divisors is an integer number (978480726).

Almost surely, 2^1956961451 is an apocalyptic number.

1956961451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956961451 is an equidigital number, since it uses as much as digits as its factorization.

1956961451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The square root of 1956961451 is about 44237.5570188952. The cubic root of 1956961451 is about 1250.8179075850.

The spelling of 1956961451 in words is "one billion, nine hundred fifty-six million, nine hundred sixty-one thousand, four hundred fifty-one".