18341732018 has 8 divisors (see below), whose sum is σ = 27520395948. Its totient is φ = 9168266704.

The previous prime is 18341731957. The next prime is 18341732027. The reversal of 18341732018 is 81023714381.

It can be written as a sum of positive squares in 2 ways, for example, as 18027627289 + 314104729 = 134267^2 + 17723^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290821 + ... + 1304952.

Almost surely, 2^18341732018 is an apocalyptic number.

18341732018 is a deficient number, since it is larger than the sum of its proper divisors (9178663930).

18341732018 is a wasteful number, since it uses less digits than its factorization.

18341732018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599308.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 18341732018 in words is "eighteen billion, three hundred forty-one million, seven hundred thirty-two thousand, eighteen".