18213835355 has 8 divisors (see below), whose sum is σ = 22806889632. Its totient is φ = 13937543488.

The previous prime is 18213835351. The next prime is 18213835361. The reversal of 18213835355 is 55353831281.

It is a happy number.

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 18213835355 - 2² = 18213835351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18213835351) 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, 79190474 + ... + 79190703.

It is an arithmetic number, because the mean of its divisors is an integer number (2850861204).

Almost surely, 2^18213835355 is an apocalyptic number.

18213835355 is a deficient number, since it is larger than the sum of its proper divisors (4593054277).

18213835355 is a wasteful number, since it uses less digits than its factorization.

18213835355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158381205.

The product of its digits is 432000, while the sum is 44.

The spelling of 18213835355 in words is "eighteen billion, two hundred thirteen million, eight hundred thirty-five thousand, three hundred fifty-five".