1164268997 has 4 divisors (see below), whose sum is σ = 1183355436. Its totient is φ = 1145182560.

The previous prime is 1164268991. The next prime is 1164269081. The reversal of 1164268997 is 7998624611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7998624611 = 683 ⋅11711017.

It can be written as a sum of positive squares in 2 ways, for example, as 100922116 + 1063346881 = 10046^2 + 32609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164268997 - 2¹⁸ = 1164006853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164268991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9543128 + ... + 9543249.

It is an arithmetic number, because the mean of its divisors is an integer number (295838859).

Almost surely, 2^1164268997 is an apocalyptic number.

It is an amenable number.

1164268997 is a deficient number, since it is larger than the sum of its proper divisors (19086439).

1164268997 is an equidigital number, since it uses as much as digits as its factorization.

1164268997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19086438.

The product of its digits is 1306368, while the sum is 53.

The square root of 1164268997 is about 34121.3862115829. The cubic root of 1164268997 is about 1052.0049362561.

The spelling of 1164268997 in words is "one billion, one hundred sixty-four million, two hundred sixty-eight thousand, nine hundred ninety-seven".