18225724382 has 4 divisors (see below), whose sum is σ = 27338586576. Its totient is φ = 9112862190.

The previous prime is 18225724357. The next prime is 18225724409. The reversal of 18225724382 is 28342752281.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4556431094 + ... + 4556431097.

It is an arithmetic number, because the mean of its divisors is an integer number (6834646644).

Almost surely, 2^18225724382 is an apocalyptic number.

18225724382 is a deficient number, since it is larger than the sum of its proper divisors (9112862194).

18225724382 is an equidigital number, since it uses as much as digits as its factorization.

18225724382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112862193.

The product of its digits is 430080, while the sum is 44.

The spelling of 18225724382 in words is "eighteen billion, two hundred twenty-five million, seven hundred twenty-four thousand, three hundred eighty-two".