1131569452 has 12 divisors (see below), whose sum is σ = 2132573296. Its totient is φ = 522262800.

The previous prime is 1131569449. The next prime is 1131569477. The reversal of 1131569452 is 2549651311.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10880424 + ... + 10880527.

Almost surely, 2^1131569452 is an apocalyptic number.

It is an amenable number.

1131569452 is a deficient number, since it is larger than the sum of its proper divisors (1001003844).

1131569452 is a wasteful number, since it uses less digits than its factorization.

1131569452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21760968 (or 21760966 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 1131569452 is about 33638.8087185025. The cubic root of 1131569452 is about 1042.0624297165.

The spelling of 1131569452 in words is "one billion, one hundred thirty-one million, five hundred sixty-nine thousand, four hundred fifty-two".