18351850199 has 2 divisors, whose sum is σ = 18351850200. Its totient is φ = 18351850198.

The previous prime is 18351850157. The next prime is 18351850211. The reversal of 18351850199 is 99105815381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18351850199 - 2²⁴ = 18335072983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18351850799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9175925099 + 9175925100.

It is an arithmetic number, because the mean of its divisors is an integer number (9175925100).

Almost surely, 2^18351850199 is an apocalyptic number.

18351850199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18351850199 is an equidigital number, since it uses as much as digits as its factorization.

18351850199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 50.

The spelling of 18351850199 in words is "eighteen billion, three hundred fifty-one million, eight hundred fifty thousand, one hundred ninety-nine".