18039641822 has 16 divisors (see below), whose sum is σ = 27794067840. Its totient is φ = 8776548312.

The previous prime is 18039641803. The next prime is 18039641839. The reversal of 18039641822 is 22814693081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376172 + ... + 421407.

It is an arithmetic number, because the mean of its divisors is an integer number (1737129240).

Almost surely, 2^18039641822 is an apocalyptic number.

18039641822 is a deficient number, since it is larger than the sum of its proper divisors (9754426018).

18039641822 is a wasteful number, since it uses less digits than its factorization.

18039641822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797887.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 18039641822 in words is "eighteen billion, thirty-nine million, six hundred forty-one thousand, eight hundred twenty-two".