18386323201 has 2 divisors, whose sum is σ = 18386323202. Its totient is φ = 18386323200.

The previous prime is 18386323183. The next prime is 18386323247. The reversal of 18386323201 is 10232368381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14315883201 + 4070440000 = 119649^2 + 63800^2 .

It is a cyclic number.

It is not a de Polignac number, because 18386323201 - 2¹¹ = 18386321153 is a prime.

It is not a weakly prime, because it can be changed into another prime (18386329201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9193161600 + 9193161601.

It is an arithmetic number, because the mean of its divisors is an integer number (9193161601).

Almost surely, 2^18386323201 is an apocalyptic number.

It is an amenable number.

18386323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

18386323201 is an equidigital number, since it uses as much as digits as its factorization.

18386323201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 18386323201 in words is "eighteen billion, three hundred eighty-six million, three hundred twenty-three thousand, two hundred one".