1100804491 has 4 divisors (see below), whose sum is σ = 1101710232. Its totient is φ = 1099898752.

The previous prime is 1100804483. The next prime is 1100804503. The reversal of 1100804491 is 1944080011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1944080011 = 37 ⋅52542703.

It is a cyclic number.

It is not a de Polignac number, because 1100804491 - 2³ = 1100804483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100804431) 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, 451045 + ... + 453478.

It is an arithmetic number, because the mean of its divisors is an integer number (275427558).

Almost surely, 2^1100804491 is an apocalyptic number.

1100804491 is a deficient number, since it is larger than the sum of its proper divisors (905741).

1100804491 is an equidigital number, since it uses as much as digits as its factorization.

1100804491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905740.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 1100804491 is about 33178.3738450214. The cubic root of 1100804491 is about 1032.5317086960.

The spelling of 1100804491 in words is "one billion, one hundred million, eight hundred four thousand, four hundred ninety-one".