1161916115 has 16 divisors (see below), whose sum is σ = 1472756736. Its totient is φ = 878623200.

The previous prime is 1161916109. The next prime is 1161916127. The reversal of 1161916115 is 5116191611.

It is not a de Polignac number, because 1161916115 - 2²⁸ = 893480659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80501 + ... + 93830.

It is an arithmetic number, because the mean of its divisors is an integer number (92047296).

Almost surely, 2^1161916115 is an apocalyptic number.

1161916115 is a deficient number, since it is larger than the sum of its proper divisors (310840621).

1161916115 is a wasteful number, since it uses less digits than its factorization.

1161916115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174410.

The product of its digits is 1620, while the sum is 32.

The square root of 1161916115 is about 34086.8906619539. The cubic root of 1161916115 is about 1051.2957894943.

The spelling of 1161916115 in words is "one billion, one hundred sixty-one million, nine hundred sixteen thousand, one hundred fifteen".