18306452213 has 8 divisors (see below), whose sum is σ = 20929067328. Its totient is φ = 15685689024.

The previous prime is 18306452189. The next prime is 18306452231. The reversal of 18306452213 is 31225460381.

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 18306452213 - 2²⁰ = 18305403637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18306451213) 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, 441731 + ... + 481392.

It is an arithmetic number, because the mean of its divisors is an integer number (2616133416).

Almost surely, 2^18306452213 is an apocalyptic number.

It is an amenable number.

18306452213 is a deficient number, since it is larger than the sum of its proper divisors (2622615115).

18306452213 is an equidigital number, since it uses as much as digits as its factorization.

18306452213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925963.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 18306452213 in words is "eighteen billion, three hundred six million, four hundred fifty-two thousand, two hundred thirteen".