18613217083 has 4 divisors (see below), whose sum is σ = 18613646128. Its totient is φ = 18612788040.

The previous prime is 18613217081. The next prime is 18613217099. The reversal of 18613217083 is 38071231681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38071231681 = 7 ⋅5438747383.

It is a cyclic number.

It is not a de Polignac number, because 18613217083 - 2¹ = 18613217081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18613217081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141063 + ... + 239008.

It is an arithmetic number, because the mean of its divisors is an integer number (4653411532).

Almost surely, 2^18613217083 is an apocalyptic number.

18613217083 is a deficient number, since it is larger than the sum of its proper divisors (429045).

18613217083 is an equidigital number, since it uses as much as digits as its factorization.

18613217083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429044.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 18613217083 in words is "eighteen billion, six hundred thirteen million, two hundred seventeen thousand, eighty-three".