18930658217 has 8 divisors (see below), whose sum is σ = 18991721376. Its totient is φ = 18869633152.

The previous prime is 18930658181. The next prime is 18930658223. The reversal of 18930658217 is 71285603981.

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

It is a cyclic number.

It is not a de Polignac number, because 18930658217 - 2¹⁴ = 18930641833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18930658517) 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, 1247558 + ... + 1262640.

It is an arithmetic number, because the mean of its divisors is an integer number (2373965172).

Almost surely, 2^18930658217 is an apocalyptic number.

It is an amenable number.

18930658217 is a deficient number, since it is larger than the sum of its proper divisors (61063159).

18930658217 is a wasteful number, since it uses less digits than its factorization.

18930658217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19047.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 18930658217 in words is "eighteen billion, nine hundred thirty million, six hundred fifty-eight thousand, two hundred seventeen".