1159607989 has 2 divisors, whose sum is σ = 1159607990. Its totient is φ = 1159607988.

The previous prime is 1159607963. The next prime is 1159608013. The reversal of 1159607989 is 9897069511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816987889 + 342620100 = 28583^2 + 18510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1159607989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1159607929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579803994 + 579803995.

It is an arithmetic number, because the mean of its divisors is an integer number (579803995).

Almost surely, 2^1159607989 is an apocalyptic number.

It is an amenable number.

1159607989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159607989 is an equidigital number, since it uses as much as digits as its factorization.

1159607989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 1159607989 is about 34053.0173259287. The cubic root of 1159607989 is about 1050.5992011497.

The spelling of 1159607989 in words is "one billion, one hundred fifty-nine million, six hundred seven thousand, nine hundred eighty-nine".