1131575493 has 16 divisors (see below), whose sum is σ = 1558901376. Its totient is φ = 729718080.

The previous prime is 1131575453. The next prime is 1131575521. The reversal of 1131575493 is 3945751311.

It is not a de Polignac number, because 1131575493 - 2¹⁷ = 1131444421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131575453) 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, 38830 + ... + 61407.

It is an arithmetic number, because the mean of its divisors is an integer number (97431336).

Almost surely, 2^1131575493 is an apocalyptic number.

It is an amenable number.

1131575493 is a deficient number, since it is larger than the sum of its proper divisors (427325883).

1131575493 is a wasteful number, since it uses less digits than its factorization.

1131575493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100364.

The product of its digits is 56700, while the sum is 39.

The square root of 1131575493 is about 33638.8985105042. The cubic root of 1131575493 is about 1042.0642840991.

The spelling of 1131575493 in words is "one billion, one hundred thirty-one million, five hundred seventy-five thousand, four hundred ninety-three".