1129013987 has 2 divisors, whose sum is σ = 1129013988. Its totient is φ = 1129013986.

The previous prime is 1129013981. The next prime is 1129014023. The reversal of 1129013987 is 7893109211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1129013987 - 2⁶ = 1129013923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1129013981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564506993 + 564506994.

It is an arithmetic number, because the mean of its divisors is an integer number (564506994).

Almost surely, 2^1129013987 is an apocalyptic number.

1129013987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129013987 is an equidigital number, since it uses as much as digits as its factorization.

1129013987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 1129013987 is about 33600.8033683720. The cubic root of 1129013987 is about 1041.2773957984.

The spelling of 1129013987 in words is "one billion, one hundred twenty-nine million, thirteen thousand, nine hundred eighty-seven".