38111999 has 2 divisors, whose sum is σ = 38112000. Its totient is φ = 38111998.

The previous prime is 38111987. The next prime is 38112013. The reversal of 38111999 is 99911183.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99911183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38111999 - 2²⁰ = 37063423 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38119999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19055999 + 19056000.

It is an arithmetic number, because the mean of its divisors is an integer number (19056000).

Almost surely, 2^38111999 is an apocalyptic number.

38111999 is a deficient number, since it is larger than the sum of its proper divisors (1).

38111999 is an equidigital number, since it uses as much as digits as its factorization.

38111999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 41.

The square root of 38111999 is about 6173.4916376391. The cubic root of 38111999 is about 336.5275131005.

The spelling of 38111999 in words is "thirty-eight million, one hundred eleven thousand, nine hundred ninety-nine".