1115616589 has 2 divisors, whose sum is σ = 1115616590. Its totient is φ = 1115616588.

The previous prime is 1115616583. The next prime is 1115616659. The reversal of 1115616589 is 9856165111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869660100 + 245956489 = 29490^2 + 15683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115616589 - 2⁷ = 1115616461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115616583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557808294 + 557808295.

It is an arithmetic number, because the mean of its divisors is an integer number (557808295).

Almost surely, 2^1115616589 is an apocalyptic number.

It is an amenable number.

1115616589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115616589 is an equidigital number, since it uses as much as digits as its factorization.

1115616589 is an evil number, because the sum of its binary digits is even.

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

The square root of 1115616589 is about 33400.8471299756. The cubic root of 1115616589 is about 1037.1422373954.

The spelling of 1115616589 in words is "one billion, one hundred fifteen million, six hundred sixteen thousand, five hundred eighty-nine".