18325730215 has 16 divisors (see below), whose sum is σ = 23685732000. Its totient is φ = 13530989952.

The previous prime is 18325730201. The next prime is 18325730231. The reversal of 18325730215 is 51203752381.

It is a cyclic number.

It is not a de Polignac number, because 18325730215 - 2¹⁷ = 18325599143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618561 + ... + 647509.

It is an arithmetic number, because the mean of its divisors is an integer number (1480358250).

Almost surely, 2^18325730215 is an apocalyptic number.

18325730215 is a deficient number, since it is larger than the sum of its proper divisors (5360001785).

18325730215 is a wasteful number, since it uses less digits than its factorization.

18325730215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38706.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 18325730215 in words is "eighteen billion, three hundred twenty-five million, seven hundred thirty thousand, two hundred fifteen".