1161316259 has 2 divisors, whose sum is σ = 1161316260. Its totient is φ = 1161316258.

The previous prime is 1161316241. The next prime is 1161316307. The reversal of 1161316259 is 9526131611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161316259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161316229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580658129 + 580658130.

It is an arithmetic number, because the mean of its divisors is an integer number (580658130).

Almost surely, 2^1161316259 is an apocalyptic number.

1161316259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161316259 is an equidigital number, since it uses as much as digits as its factorization.

1161316259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 1161316259 is about 34078.0906008538. The cubic root of 1161316259 is about 1051.1148427996.

It can be divided in two parts, 11613 and 16259, that added together give a palindrome (27872).

The spelling of 1161316259 in words is "one billion, one hundred sixty-one million, three hundred sixteen thousand, two hundred fifty-nine".