1165727453 has 4 divisors (see below), whose sum is σ = 1271702688. Its totient is φ = 1059752220.

The previous prime is 1165727449. The next prime is 1165727467. The reversal of 1165727453 is 3547275611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3547275611 = 11 ⋅322479601.

It is a cyclic number.

It is not a de Polignac number, because 1165727453 - 2² = 1165727449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165727453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165727483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52987601 + ... + 52987622.

It is an arithmetic number, because the mean of its divisors is an integer number (317925672).

Almost surely, 2^1165727453 is an apocalyptic number.

It is an amenable number.

1165727453 is a deficient number, since it is larger than the sum of its proper divisors (105975235).

1165727453 is a wasteful number, since it uses less digits than its factorization.

1165727453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105975234.

The product of its digits is 176400, while the sum is 41.

The square root of 1165727453 is about 34142.7511047367. The cubic root of 1165727453 is about 1052.4440279945. Note that the first 3 decimals are identical.

The spelling of 1165727453 in words is "one billion, one hundred sixty-five million, seven hundred twenty-seven thousand, four hundred fifty-three".