19116899 has 2 divisors, whose sum is σ = 19116900. Its totient is φ = 19116898.

The previous prime is 19116883. The next prime is 19116917. The reversal of 19116899 is 99861191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19116899 - 2⁴ = 19116883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19116599) 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 as a sum of consecutive naturals, namely, 9558449 + 9558450.

It is an arithmetic number, because the mean of its divisors is an integer number (9558450).

Almost surely, 2^19116899 is an apocalyptic number.

19116899 is a deficient number, since it is larger than the sum of its proper divisors (1).

19116899 is an equidigital number, since it uses as much as digits as its factorization.

19116899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 44.

The square root of 19116899 is about 4372.2876163400. The cubic root of 19116899 is about 267.3862980832.

The spelling of 19116899 in words is "nineteen million, one hundred sixteen thousand, eight hundred ninety-nine".