18348199 has 2 divisors, whose sum is σ = 18348200. Its totient is φ = 18348198.

The previous prime is 18348193. The next prime is 18348223. The reversal of 18348199 is 99184381.

It is a weak prime.

It is an emirp because it is prime and its reverse (99184381) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18348199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18348193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9174099 + 9174100.

It is an arithmetic number, because the mean of its divisors is an integer number (9174100).

Almost surely, 2^18348199 is an apocalyptic number.

18348199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18348199 is an equidigital number, since it uses as much as digits as its factorization.

18348199 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18348199 is about 4283.4797770037. The cubic root of 18348199 is about 263.7532464430.

The spelling of 18348199 in words is "eighteen million, three hundred forty-eight thousand, one hundred ninety-nine".