1916953559 has 2 divisors, whose sum is σ = 1916953560. Its totient is φ = 1916953558.

The previous prime is 1916953537. The next prime is 1916953651. The reversal of 1916953559 is 9553596191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1916953559 - 2²⁰ = 1915904983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1916953559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1916973559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958476779 + 958476780.

It is an arithmetic number, because the mean of its divisors is an integer number (958476780).

Almost surely, 2^1916953559 is an apocalyptic number.

1916953559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916953559 is an equidigital number, since it uses as much as digits as its factorization.

1916953559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1640250, while the sum is 53.

The square root of 1916953559 is about 43783.0282072860. The cubic root of 1916953559 is about 1242.2352932530.

The spelling of 1916953559 in words is "one billion, nine hundred sixteen million, nine hundred fifty-three thousand, five hundred fifty-nine".