18214786137 has 4 divisors (see below), whose sum is σ = 24286381520. Its totient is φ = 12143190756.

The previous prime is 18214786133. The next prime is 18214786159. The reversal of 18214786137 is 73168741281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18214786137 - 2² = 18214786133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18214786133) 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, 3035797687 + ... + 3035797692.

It is an arithmetic number, because the mean of its divisors is an integer number (6071595380).

Almost surely, 2^18214786137 is an apocalyptic number.

It is an amenable number.

18214786137 is a deficient number, since it is larger than the sum of its proper divisors (6071595383).

18214786137 is an equidigital number, since it uses as much as digits as its factorization.

18214786137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071595382.

The product of its digits is 451584, while the sum is 48.

The spelling of 18214786137 in words is "eighteen billion, two hundred fourteen million, seven hundred eighty-six thousand, one hundred thirty-seven".