1104645891 has 4 divisors (see below), whose sum is σ = 1472861192. Its totient is φ = 736430592.

The previous prime is 1104645869. The next prime is 1104645911. The reversal of 1104645891 is 1985464011.

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

It is not a de Polignac number, because 1104645891 - 2⁵ = 1104645859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1104645691) 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, 184107646 + ... + 184107651.

It is an arithmetic number, because the mean of its divisors is an integer number (368215298).

Almost surely, 2^1104645891 is an apocalyptic number.

1104645891 is a deficient number, since it is larger than the sum of its proper divisors (368215301).

1104645891 is an equidigital number, since it uses as much as digits as its factorization.

1104645891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368215300.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1104645891 is about 33236.2135478758. The cubic root of 1104645891 is about 1033.7313654150.

The spelling of 1104645891 in words is "one billion, one hundred four million, six hundred forty-five thousand, eight hundred ninety-one".