19042799 has 2 divisors, whose sum is σ = 19042800. Its totient is φ = 19042798.

The previous prime is 19042789. The next prime is 19042811. The reversal of 19042799 is 99724091.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19042799 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19042729) 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, 9521399 + 9521400.

It is an arithmetic number, because the mean of its divisors is an integer number (9521400).

Almost surely, 2^19042799 is an apocalyptic number.

19042799 is a deficient number, since it is larger than the sum of its proper divisors (1).

19042799 is an equidigital number, since it uses as much as digits as its factorization.

19042799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 19042799 is about 4363.8055639545. The cubic root of 19042799 is about 267.0403741309.

The spelling of 19042799 in words is "nineteen million, forty-two thousand, seven hundred ninety-nine".