18338341505 has 8 divisors (see below), whose sum is σ = 24006556224. Its totient is φ = 13336975600.

The previous prime is 18338341501. The next prime is 18338341519. The reversal of 18338341505 is 50514383381.

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

It is not a de Polignac number, because 18338341505 - 2² = 18338341501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18338341501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166712141 + ... + 166712250.

It is an arithmetic number, because the mean of its divisors is an integer number (3000819528).

Almost surely, 2^18338341505 is an apocalyptic number.

It is an amenable number.

18338341505 is a deficient number, since it is larger than the sum of its proper divisors (5668214719).

18338341505 is a wasteful number, since it uses less digits than its factorization.

18338341505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333424407.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 18338341505 in words is "eighteen billion, three hundred thirty-eight million, three hundred forty-one thousand, five hundred five".