18530918383 has 2 divisors, whose sum is σ = 18530918384. Its totient is φ = 18530918382.

The previous prime is 18530918359. The next prime is 18530918401. The reversal of 18530918383 is 38381903581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18530918383 - 2⁹ = 18530917871 is a prime.

It is a super-2 number, since 2×18530918383² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18530918183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9265459191 + 9265459192.

It is an arithmetic number, because the mean of its divisors is an integer number (9265459192).

Almost surely, 2^18530918383 is an apocalyptic number.

18530918383 is a deficient number, since it is larger than the sum of its proper divisors (1).

18530918383 is an equidigital number, since it uses as much as digits as its factorization.

18530918383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 18530918383 in words is "eighteen billion, five hundred thirty million, nine hundred eighteen thousand, three hundred eighty-three".