18342501899 has 2 divisors, whose sum is σ = 18342501900. Its totient is φ = 18342501898.

The previous prime is 18342501833. The next prime is 18342501913. The reversal of 18342501899 is 99810524381.

It is a strong prime.

It is an emirp because it is prime and its reverse (99810524381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18342501899 - 2¹⁶ = 18342436363 is a prime.

It is not a weakly prime, because it can be changed into another prime (18342503899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9171250949 + 9171250950.

It is an arithmetic number, because the mean of its divisors is an integer number (9171250950).

Almost surely, 2^18342501899 is an apocalyptic number.

18342501899 is a deficient number, since it is larger than the sum of its proper divisors (1).

18342501899 is an equidigital number, since it uses as much as digits as its factorization.

18342501899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 18342501899 in words is "eighteen billion, three hundred forty-two million, five hundred one thousand, eight hundred ninety-nine".