1131916665 has 32 divisors (see below), whose sum is σ = 1983470976. Its totient is φ = 546652160.

The previous prime is 1131916657. The next prime is 1131916679. The reversal of 1131916665 is 5666191311.

It is not a de Polignac number, because 1131916665 - 2³ = 1131916657 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29059 + ... + 55751.

It is an arithmetic number, because the mean of its divisors is an integer number (61983468).

Almost surely, 2^1131916665 is an apocalyptic number.

1131916665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131916665 is a deficient number, since it is larger than the sum of its proper divisors (851554311).

1131916665 is a wasteful number, since it uses less digits than its factorization.

1131916665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26969.

The product of its digits is 29160, while the sum is 39.

The square root of 1131916665 is about 33643.9692218383. The cubic root of 1131916665 is about 1042.1690016467.

The spelling of 1131916665 in words is "one billion, one hundred thirty-one million, nine hundred sixteen thousand, six hundred sixty-five".