18354551223 has 8 divisors (see below), whose sum is σ = 24473511936. Its totient is φ = 12235979000.

The previous prime is 18354551203. The next prime is 18354551231. The reversal of 18354551223 is 32215545381.

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 18354551223 - 2⁵ = 18354551191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18354551203) 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, 41308 + ... + 195998.

It is an arithmetic number, because the mean of its divisors is an integer number (3059188992).

Almost surely, 2^18354551223 is an apocalyptic number.

18354551223 is a deficient number, since it is larger than the sum of its proper divisors (6118960713).

18354551223 is a wasteful number, since it uses less digits than its factorization.

18354551223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194245.

The product of its digits is 144000, while the sum is 39.

The spelling of 18354551223 in words is "eighteen billion, three hundred fifty-four million, five hundred fifty-one thousand, two hundred twenty-three".