18237320822 has 8 divisors (see below), whose sum is σ = 31263978576. Its totient is φ = 7815994632.

The previous prime is 18237320821. The next prime is 18237320837. The reversal of 18237320822 is 22802373281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18237320821) 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, 651332873 + ... + 651332900.

It is an arithmetic number, because the mean of its divisors is an integer number (3907997322).

Almost surely, 2^18237320822 is an apocalyptic number.

18237320822 is a deficient number, since it is larger than the sum of its proper divisors (13026657754).

18237320822 is a wasteful number, since it uses less digits than its factorization.

18237320822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302665782.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 18237320822 in words is "eighteen billion, two hundred thirty-seven million, three hundred twenty thousand, eight hundred twenty-two".