1166015969 has 2 divisors, whose sum is σ = 1166015970. Its totient is φ = 1166015968.

The previous prime is 1166015947. The next prime is 1166015999. The reversal of 1166015969 is 9695106611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788879569 + 377136400 = 28087^2 + 19420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166015969 - 2²⁰ = 1164967393 is a prime.

It is a super-2 number, since 2×1166015969² = 2719186479926017922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166015909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583007984 + 583007985.

It is an arithmetic number, because the mean of its divisors is an integer number (583007985).

Almost surely, 2^1166015969 is an apocalyptic number.

It is an amenable number.

1166015969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166015969 is an equidigital number, since it uses as much as digits as its factorization.

1166015969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 1166015969 is about 34146.9759861690. The cubic root of 1166015969 is about 1052.5308469998.

The spelling of 1166015969 in words is "one billion, one hundred sixty-six million, fifteen thousand, nine hundred sixty-nine".