1108996491 has 4 divisors (see below), whose sum is σ = 1478661992. Its totient is φ = 739330992.

The previous prime is 1108996429. The next prime is 1108996501. The reversal of 1108996491 is 1946998011.

It is a happy number.

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

It is not a de Polignac number, because 1108996491 - 2¹⁷ = 1108865419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1108996491.

It is not an unprimeable number, because it can be changed into a prime (1108916491) 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, 184832746 + ... + 184832751.

It is an arithmetic number, because the mean of its divisors is an integer number (369665498).

Almost surely, 2^1108996491 is an apocalyptic number.

1108996491 is a deficient number, since it is larger than the sum of its proper divisors (369665501).

1108996491 is an equidigital number, since it uses as much as digits as its factorization.

1108996491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369665500.

The product of its (nonzero) digits is 139968, while the sum is 48.

The square root of 1108996491 is about 33301.5989255771. The cubic root of 1108996491 is about 1035.0866897446.

The spelling of 1108996491 in words is "one billion, one hundred eight million, nine hundred ninety-six thousand, four hundred ninety-one".