1109432557 has 8 divisors (see below), whose sum is σ = 1146431232. Its totient is φ = 1072509600.

The previous prime is 1109432549. The next prime is 1109432561. The reversal of 1109432557 is 7552349011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1109432557 - 2³ = 1109432549 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 (1109432507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11673 + ... + 48529.

It is an arithmetic number, because the mean of its divisors is an integer number (143303904).

Almost surely, 2^1109432557 is an apocalyptic number.

It is an amenable number.

1109432557 is a deficient number, since it is larger than the sum of its proper divisors (36998675).

1109432557 is an equidigital number, since it uses as much as digits as its factorization.

1109432557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37859.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1109432557 is about 33308.1455052664. The cubic root of 1109432557 is about 1035.2223399980. Note that the first 3 decimals are identical.

The spelling of 1109432557 in words is "one billion, one hundred nine million, four hundred thirty-two thousand, five hundred fifty-seven".