1110345491 has 4 divisors (see below), whose sum is σ = 1110485184. Its totient is φ = 1110205800.

The previous prime is 1110345479. The next prime is 1110345557. The reversal of 1110345491 is 1945430111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1945430111 = 83 ⋅23438917.

It is a cyclic number.

It is not a de Polignac number, because 1110345491 - 2²² = 1106151187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110345461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57155 + ... + 74076.

It is an arithmetic number, because the mean of its divisors is an integer number (277621296).

Almost surely, 2^1110345491 is an apocalyptic number.

1110345491 is a deficient number, since it is larger than the sum of its proper divisors (139693).

1110345491 is an equidigital number, since it uses as much as digits as its factorization.

1110345491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139692.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1110345491 is about 33321.8470526470. The cubic root of 1110345491 is about 1035.5062180193.

The spelling of 1110345491 in words is "one billion, one hundred ten million, three hundred forty-five thousand, four hundred ninety-one".