1164988817 has 4 divisors (see below), whose sum is σ = 1168711140. Its totient is φ = 1161266496.

The previous prime is 1164988793. The next prime is 1164988837. The reversal of 1164988817 is 7188894611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7188894611 = 503 ⋅14292037.

It can be written as a sum of positive squares in 2 ways, for example, as 551733121 + 613255696 = 23489^2 + 24764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164988817 - 2¹⁴ = 1164972433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1164988837) 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, 1860692 + ... + 1861317.

It is an arithmetic number, because the mean of its divisors is an integer number (292177785).

Almost surely, 2^1164988817 is an apocalyptic number.

It is an amenable number.

1164988817 is a deficient number, since it is larger than the sum of its proper divisors (3722323).

1164988817 is an equidigital number, since it uses as much as digits as its factorization.

1164988817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722322.

The product of its digits is 774144, while the sum is 53.

The square root of 1164988817 is about 34131.9325119455. The cubic root of 1164988817 is about 1052.2216954956.

The spelling of 1164988817 in words is "one billion, one hundred sixty-four million, nine hundred eighty-eight thousand, eight hundred seventeen".