18341732118 has 32 divisors (see below), whose sum is σ = 39859799040. Its totient is φ = 5605282080.

The previous prime is 18341732117. The next prime is 18341732119. The reversal of 18341732118 is 81123714381.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18341732117) and next prime (18341732119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341732117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2591505 + ... + 2598572.

It is an arithmetic number, because the mean of its divisors is an integer number (1245618720).

Almost surely, 2^18341732118 is an apocalyptic number.

18341732118 is an abundant number, since it is smaller than the sum of its proper divisors (21518066922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18341732118 is a wasteful number, since it uses less digits than its factorization.

18341732118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190132.

The product of its digits is 32256, while the sum is 39.

The spelling of 18341732118 in words is "eighteen billion, three hundred forty-one million, seven hundred thirty-two thousand, one hundred eighteen".