1165105453 has 4 divisors (see below), whose sum is σ = 1167153660. Its totient is φ = 1163057248.

The previous prime is 1165105433. The next prime is 1165105481. The reversal of 1165105453 is 3545015611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727542729 + 437562724 = 26973^2 + 20918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165105453 - 2¹⁷ = 1164974381 is a prime.

It is a super-2 number, since 2×1165105453² = 2714941433220670418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165105423) 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, 1023250 + ... + 1024387.

It is an arithmetic number, because the mean of its divisors is an integer number (291788415).

Almost surely, 2^1165105453 is an apocalyptic number.

It is an amenable number.

1165105453 is a deficient number, since it is larger than the sum of its proper divisors (2048207).

1165105453 is an equidigital number, since it uses as much as digits as its factorization.

1165105453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048206.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1165105453 is about 34133.6410744591. The cubic root of 1165105453 is about 1052.2568096622.

The spelling of 1165105453 in words is "one billion, one hundred sixty-five million, one hundred five thousand, four hundred fifty-three".