1131569453 has 16 divisors (see below), whose sum is σ = 1441365120. Its totient is φ = 864815616.

The previous prime is 1131569449. The next prime is 1131569477. The reversal of 1131569453 is 3549651311.

It is not a de Polignac number, because 1131569453 - 2² = 1131569449 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 (1131569753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247976 + ... + 252497.

It is an arithmetic number, because the mean of its divisors is an integer number (90085320).

Almost surely, 2^1131569453 is an apocalyptic number.

It is an amenable number.

1131569453 is a deficient number, since it is larger than the sum of its proper divisors (309795667).

1131569453 is a wasteful number, since it uses less digits than its factorization.

1131569453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500516.

The product of its digits is 48600, while the sum is 38.

The square root of 1131569453 is about 33638.8087333663. The cubic root of 1131569453 is about 1042.0624300235.

The spelling of 1131569453 in words is "one billion, one hundred thirty-one million, five hundred sixty-nine thousand, four hundred fifty-three".