18145838716 has 18 divisors (see below), whose sum is σ = 32782289568. Its totient is φ = 8779518720.

The previous prime is 18145838647. The next prime is 18145838749. The reversal of 18145838716 is 61783854181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1493980 + ... + 1506076.

Almost surely, 2^18145838716 is an apocalyptic number.

It is an amenable number.

18145838716 is a deficient number, since it is larger than the sum of its proper divisors (14636450852).

18145838716 is an frugal number, since it uses more digits than its factorization.

18145838716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24229 (or 12130 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 52.

The spelling of 18145838716 in words is "eighteen billion, one hundred forty-five million, eight hundred thirty-eight thousand, seven hundred sixteen".