1285129159 has 2 divisors, whose sum is σ = 1285129160. Its totient is φ = 1285129158.

The previous prime is 1285129123. The next prime is 1285129187. The reversal of 1285129159 is 9519215821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285129159 - 2¹⁵ = 1285096391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285129189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642564579 + 642564580.

It is an arithmetic number, because the mean of its divisors is an integer number (642564580).

Almost surely, 2^1285129159 is an apocalyptic number.

1285129159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285129159 is an equidigital number, since it uses as much as digits as its factorization.

1285129159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 43.

The square root of 1285129159 is about 35848.6981493052. The cubic root of 1285129159 is about 1087.2153928939.

The spelling of 1285129159 in words is "one billion, two hundred eighty-five million, one hundred twenty-nine thousand, one hundred fifty-nine".