18213955830413 has 8 divisors (see below), whose sum is σ = 20815988359680. Its totient is φ = 15611933010960.

The previous prime is 18213955830391. The next prime is 18213955830419. The reversal of 18213955830413 is 31403855931281.

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 18213955830413 - 2⁶ = 18213955830349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18213955830419) 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, 2173583 + ... + 6415011.

It is an arithmetic number, because the mean of its divisors is an integer number (2601998544960).

Almost surely, 2^{18213955830413} is an apocalyptic number.

It is an amenable number.

18213955830413 is a deficient number, since it is larger than the sum of its proper divisors (2602032529267).

18213955830413 is an equidigital number, since it uses as much as digits as its factorization.

18213955830413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854907.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 18213955830413 in words is "eighteen trillion, two hundred thirteen billion, nine hundred fifty-five million, eight hundred thirty thousand, four hundred thirteen".