18372828223 has 4 divisors (see below), whose sum is σ = 18374084680. Its totient is φ = 18371571768.

The previous prime is 18372828211. The next prime is 18372828277. The reversal of 18372828223 is 32282827381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18372828223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18372828823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606033 + ... + 635626.

It is an arithmetic number, because the mean of its divisors is an integer number (4593521170).

Almost surely, 2^18372828223 is an apocalyptic number.

18372828223 is a deficient number, since it is larger than the sum of its proper divisors (1256457).

18372828223 is a wasteful number, since it uses less digits than its factorization.

18372828223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256456.

The product of its digits is 516096, while the sum is 46.

The spelling of 18372828223 in words is "eighteen billion, three hundred seventy-two million, eight hundred twenty-eight thousand, two hundred twenty-three".