18830864213 has 4 divisors (see below), whose sum is σ = 21520987680. Its totient is φ = 16140740748.

The previous prime is 18830864207. The next prime is 18830864233. The reversal of 18830864213 is 31246803881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18830864213 - 2⁴ = 18830864197 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 (18830864233) 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, 1345061723 + ... + 1345061736.

It is an arithmetic number, because the mean of its divisors is an integer number (5380246920).

Almost surely, 2^18830864213 is an apocalyptic number.

It is an amenable number.

18830864213 is a deficient number, since it is larger than the sum of its proper divisors (2690123467).

18830864213 is an equidigital number, since it uses as much as digits as its factorization.

18830864213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690123466.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 18830864213 in words is "eighteen billion, eight hundred thirty million, eight hundred sixty-four thousand, two hundred thirteen".