1956559541 has 2 divisors, whose sum is σ = 1956559542. Its totient is φ = 1956559540.

The previous prime is 1956559531. The next prime is 1956559573. The reversal of 1956559541 is 1459556591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1287302641 + 669256900 = 35879^2 + 25870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956559541 - 2⁶ = 1956559477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1956559541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1956559531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978279770 + 978279771.

It is an arithmetic number, because the mean of its divisors is an integer number (978279771).

Almost surely, 2^1956559541 is an apocalyptic number.

It is an amenable number.

1956559541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956559541 is an equidigital number, since it uses as much as digits as its factorization.

1956559541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215000, while the sum is 50.

The square root of 1956559541 is about 44233.0141523274. The cubic root of 1956559541 is about 1250.7322730172.

The spelling of 1956559541 in words is "one billion, nine hundred fifty-six million, five hundred fifty-nine thousand, five hundred forty-one".