1166413309 has 2 divisors, whose sum is σ = 1166413310. Its totient is φ = 1166413308.

The previous prime is 1166413307. The next prime is 1166413327. The reversal of 1166413309 is 9033146611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134207684 + 32205625 = 33678^2 + 5675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166413309 - 2¹ = 1166413307 is a prime.

Together with 1166413307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166413301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583206654 + 583206655.

It is an arithmetic number, because the mean of its divisors is an integer number (583206655).

Almost surely, 2^1166413309 is an apocalyptic number.

It is an amenable number.

1166413309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166413309 is an equidigital number, since it uses as much as digits as its factorization.

1166413309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1166413309 is about 34152.7935753431. The cubic root of 1166413309 is about 1052.6503894196.

The spelling of 1166413309 in words is "one billion, one hundred sixty-six million, four hundred thirteen thousand, three hundred nine".