1280885159 has 2 divisors, whose sum is σ = 1280885160. Its totient is φ = 1280885158.

The previous prime is 1280885153. The next prime is 1280885201. The reversal of 1280885159 is 9515880821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1280885159 - 2⁴ = 1280885143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280885153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640442579 + 640442580.

It is an arithmetic number, because the mean of its divisors is an integer number (640442580).

Almost surely, 2^1280885159 is an apocalyptic number.

1280885159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280885159 is an equidigital number, since it uses as much as digits as its factorization.

1280885159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 47.

The square root of 1280885159 is about 35789.4559751891. The cubic root of 1280885159 is about 1086.0172692995.

The spelling of 1280885159 in words is "one billion, two hundred eighty million, eight hundred eighty-five thousand, one hundred fifty-nine".