110111809 has 2 divisors, whose sum is σ = 110111810. Its totient is φ = 110111808.

The previous prime is 110111791. The next prime is 110111819. The reversal of 110111809 is 908111011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107640625 + 2471184 = 10375^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111809 - 2¹¹ = 110109761 is a prime.

It is a super-2 number, since 2×110111809² = 24249220962504962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110111809.

It is not a weakly prime, because it can be changed into another prime (110111819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055904 + 55055905.

It is an arithmetic number, because the mean of its divisors is an integer number (55055905).

Almost surely, 2^110111809 is an apocalyptic number.

It is an amenable number.

110111809 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111809 is an equidigital number, since it uses as much as digits as its factorization.

110111809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The square root of 110111809 is about 10493.4174128355. The cubic root of 110111809 is about 479.3042712984.

The spelling of 110111809 in words is "one hundred ten million, one hundred eleven thousand, eight hundred nine".