11638199 has 2 divisors, whose sum is σ = 11638200. Its totient is φ = 11638198.

The previous prime is 11638181. The next prime is 11638213. The reversal of 11638199 is 99183611.

It is a strong prime.

It is an emirp because it is prime and its reverse (99183611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11638199 - 2¹⁶ = 11572663 is a 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 (11638139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819099 + 5819100.

It is an arithmetic number, because the mean of its divisors is an integer number (5819100).

Almost surely, 2^11638199 is an apocalyptic number.

11638199 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638199 is an equidigital number, since it uses as much as digits as its factorization.

11638199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 38.

The square root of 11638199 is about 3411.4804704116. The cubic root of 11638199 is about 226.6184473073.

The spelling of 11638199 in words is "eleven million, six hundred thirty-eight thousand, one hundred ninety-nine".