1165413253 has 8 divisors (see below), whose sum is σ = 1185881760. Its totient is φ = 1144968720.

The previous prime is 1165413247. The next prime is 1165413283. The reversal of 1165413253 is 3523145611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1165413253 - 2²⁵ = 1131858821 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 (1165413283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112263 + ... + 122203.

It is an arithmetic number, because the mean of its divisors is an integer number (148235220).

Almost surely, 2^1165413253 is an apocalyptic number.

It is an amenable number.

1165413253 is a deficient number, since it is larger than the sum of its proper divisors (20468507).

1165413253 is an equidigital number, since it uses as much as digits as its factorization.

1165413253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11987.

The product of its digits is 10800, while the sum is 31.

The square root of 1165413253 is about 34138.1495251280. The cubic root of 1165413253 is about 1052.3494639731.

Adding to 1165413253 its reverse (3523145611), we get a palindrome (4688558864).

The spelling of 1165413253 in words is "one billion, one hundred sixty-five million, four hundred thirteen thousand, two hundred fifty-three".