18223777193 has 8 divisors (see below), whose sum is σ = 18375419040. Its totient is φ = 18072325440.

The previous prime is 18223777189. The next prime is 18223777207. The reversal of 18223777193 is 39177732281.

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 18223777193 - 2² = 18223777189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18223777183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148346 + ... + 241772.

It is an arithmetic number, because the mean of its divisors is an integer number (2296927380).

Almost surely, 2^18223777193 is an apocalyptic number.

It is an amenable number.

18223777193 is a deficient number, since it is larger than the sum of its proper divisors (151641847).

18223777193 is a wasteful number, since it uses less digits than its factorization.

18223777193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95047.

The product of its digits is 889056, while the sum is 50.

The spelling of 18223777193 in words is "eighteen billion, two hundred twenty-three million, seven hundred seventy-seven thousand, one hundred ninety-three".