38685537199 has 4 divisors (see below), whose sum is σ = 38732543536. Its totient is φ = 38638530864.

The previous prime is 38685537197. The next prime is 38685537203. The reversal of 38685537199 is 99173558683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99173558683 = 8521 ⋅11638723.

It is a cyclic number.

It is not a de Polignac number, because 38685537199 - 2¹ = 38685537197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38685537199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38685537197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23501934 + ... + 23503579.

It is an arithmetic number, because the mean of its divisors is an integer number (9683135884).

Almost surely, 2^38685537199 is an apocalyptic number.

38685537199 is a deficient number, since it is larger than the sum of its proper divisors (47006337).

38685537199 is an equidigital number, since it uses as much as digits as its factorization.

38685537199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47006336.

The product of its digits is 48988800, while the sum is 64.

The spelling of 38685537199 in words is "thirty-eight billion, six hundred eighty-five million, five hundred thirty-seven thousand, one hundred ninety-nine".