20038218199 has 2 divisors, whose sum is σ = 20038218200. Its totient is φ = 20038218198.

The previous prime is 20038218173. The next prime is 20038218209. The reversal of 20038218199 is 99181283002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20038218199 - 2²¹ = 20036121047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20038213199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10019109099 + 10019109100.

It is an arithmetic number, because the mean of its divisors is an integer number (10019109100).

Almost surely, 2^20038218199 is an apocalyptic number.

20038218199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20038218199 is an equidigital number, since it uses as much as digits as its factorization.

20038218199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 20038218199 in words is "twenty billion, thirty-eight million, two hundred eighteen thousand, one hundred ninety-nine".