1164427909 has 2 divisors, whose sum is σ = 1164427910. Its totient is φ = 1164427908.

The previous prime is 1164427897. The next prime is 1164427919. The reversal of 1164427909 is 9097244611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1162605409 + 1822500 = 34097^2 + 1350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164427909 - 2¹¹ = 1164425861 is a prime.

It is a super-2 number, since 2×1164427909² = 2711784710516224562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164427919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582213954 + 582213955.

It is an arithmetic number, because the mean of its divisors is an integer number (582213955).

Almost surely, 2^1164427909 is an apocalyptic number.

It is an amenable number.

1164427909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164427909 is an equidigital number, since it uses as much as digits as its factorization.

1164427909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1164427909 is about 34123.7147596800. The cubic root of 1164427909 is about 1052.0527970750.

The spelling of 1164427909 in words is "one billion, one hundred sixty-four million, four hundred twenty-seven thousand, nine hundred nine".