18368666837 has 8 divisors (see below), whose sum is σ = 18650555616. Its totient is φ = 18088220592.

The previous prime is 18368666831. The next prime is 18368666863. The reversal of 18368666837 is 73866686381.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18368666837 - 2¹⁴ = 18368650453 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 18368666837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368666831) 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 7 ways as a sum of consecutive naturals, for example, 334958 + ... + 385919.

It is an arithmetic number, because the mean of its divisors is an integer number (2331319452).

Almost surely, 2^18368666837 is an apocalyptic number.

It is an amenable number.

18368666837 is a deficient number, since it is larger than the sum of its proper divisors (281888779).

18368666837 is an equidigital number, since it uses as much as digits as its factorization.

18368666837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721267.

The product of its digits is 41803776, while the sum is 62.

The spelling of 18368666837 in words is "eighteen billion, three hundred sixty-eight million, six hundred sixty-six thousand, eight hundred thirty-seven".