1110539891 has 4 divisors (see below), whose sum is σ = 1148834400. Its totient is φ = 1072245384.

The previous prime is 1110539879. The next prime is 1110539921. The reversal of 1110539891 is 1989350111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110539891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110539191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19147211 + ... + 19147268.

It is an arithmetic number, because the mean of its divisors is an integer number (287208600).

Almost surely, 2^1110539891 is an apocalyptic number.

1110539891 is a deficient number, since it is larger than the sum of its proper divisors (38294509).

1110539891 is an equidigital number, since it uses as much as digits as its factorization.

1110539891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38294508.

The product of its (nonzero) digits is 9720, while the sum is 38.

The square root of 1110539891 is about 33324.7639301466. The cubic root of 1110539891 is about 1035.5666468569.

The spelling of 1110539891 in words is "one billion, one hundred ten million, five hundred thirty-nine thousand, eight hundred ninety-one".