1101105491 has 4 divisors (see below), whose sum is σ = 1112457192. Its totient is φ = 1089753792.

The previous prime is 1101105457. The next prime is 1101105497. The reversal of 1101105491 is 1945011011.

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-1101105491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101105497) 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, 5675705 + ... + 5675898.

It is an arithmetic number, because the mean of its divisors is an integer number (278114298).

Almost surely, 2^1101105491 is an apocalyptic number.

1101105491 is a deficient number, since it is larger than the sum of its proper divisors (11351701).

1101105491 is an equidigital number, since it uses as much as digits as its factorization.

1101105491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11351700.

The product of its (nonzero) digits is 180, while the sum is 23.

The square root of 1101105491 is about 33182.9096222739. The cubic root of 1101105491 is about 1032.6258106986.

The spelling of 1101105491 in words is "one billion, one hundred one million, one hundred five thousand, four hundred ninety-one".