18839020873 has 2 divisors, whose sum is σ = 18839020874. Its totient is φ = 18839020872.

The previous prime is 18839020853. The next prime is 18839020891. The reversal of 18839020873 is 37802093881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11847887104 + 6991133769 = 108848^2 + 83613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18839020873 is a prime.

It is not a weakly prime, because it can be changed into another prime (18839020853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9419510436 + 9419510437.

It is an arithmetic number, because the mean of its divisors is an integer number (9419510437).

Almost surely, 2^18839020873 is an apocalyptic number.

It is an amenable number.

18839020873 is a deficient number, since it is larger than the sum of its proper divisors (1).

18839020873 is an equidigital number, since it uses as much as digits as its factorization.

18839020873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 18839020873 in words is "eighteen billion, eight hundred thirty-nine million, twenty thousand, eight hundred seventy-three".