18081892213 has 8 divisors (see below), whose sum is σ = 22543657920. Its totient is φ = 14089786080.

The previous prime is 18081892211. The next prime is 18081892219. The reversal of 18081892213 is 31229818081.

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 18081892213 - 2¹ = 18081892211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18081892213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081892211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117414808 + ... + 117414961.

It is an arithmetic number, because the mean of its divisors is an integer number (2817957240).

Almost surely, 2^18081892213 is an apocalyptic number.

It is an amenable number.

18081892213 is a deficient number, since it is larger than the sum of its proper divisors (4461765707).

18081892213 is a wasteful number, since it uses less digits than its factorization.

18081892213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234829787.

The product of its (nonzero) digits is 55296, while the sum is 43.

The spelling of 18081892213 in words is "eighteen billion, eighty-one million, eight hundred ninety-two thousand, two hundred thirteen".