18839557673 has 8 divisors (see below), whose sum is σ = 19904296320. Its totient is φ = 17782137360.

The previous prime is 18839557663. The next prime is 18839557679. The reversal of 18839557673 is 37675593881.

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 18839557673 - 2⁴ = 18839557657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18839557679) 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, 1824290 + ... + 1834587.

It is an arithmetic number, because the mean of its divisors is an integer number (2488037040).

Almost surely, 2^18839557673 is an apocalyptic number.

It is an amenable number.

18839557673 is a deficient number, since it is larger than the sum of its proper divisors (1064738647).

18839557673 is a wasteful number, since it uses less digits than its factorization.

18839557673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659167.

The product of its digits is 38102400, while the sum is 62.

The spelling of 18839557673 in words is "eighteen billion, eight hundred thirty-nine million, five hundred fifty-seven thousand, six hundred seventy-three".