1109498881 has 2 divisors, whose sum is σ = 1109498882. Its totient is φ = 1109498880.

The previous prime is 1109498869. The next prime is 1109498899. The reversal of 1109498881 is 1888949011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864889281 + 244609600 = 29409^2 + 15640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109498881 - 2¹¹ = 1109496833 is a prime.

It is a super-2 number, since 2×1109498881² = 2461975533880504322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1109498821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554749440 + 554749441.

It is an arithmetic number, because the mean of its divisors is an integer number (554749441).

Almost surely, 2^1109498881 is an apocalyptic number.

It is an amenable number.

1109498881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109498881 is an equidigital number, since it uses as much as digits as its factorization.

1109498881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 49.

The square root of 1109498881 is about 33309.1411027063. The cubic root of 1109498881 is about 1035.2429687774.

The spelling of 1109498881 in words is "one billion, one hundred nine million, four hundred ninety-eight thousand, eight hundred eighty-one".