110109991819 has 2 divisors, whose sum is σ = 110109991820. Its totient is φ = 110109991818.

The previous prime is 110109991811. The next prime is 110109991861. The reversal of 110109991819 is 918199901011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110109991819 - 2³ = 110109991811 is a prime.

It is a super-2 number, since 2×110109991819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (110109991811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55054995909 + 55054995910.

It is an arithmetic number, because the mean of its divisors is an integer number (55054995910).

Almost surely, 2^110109991819 is an apocalyptic number.

110109991819 is a deficient number, since it is larger than the sum of its proper divisors (1).

110109991819 is an equidigital number, since it uses as much as digits as its factorization.

110109991819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 49.

The spelling of 110109991819 in words is "one hundred ten billion, one hundred nine million, nine hundred ninety-one thousand, eight hundred nineteen".