18428950373 has 2 divisors, whose sum is σ = 18428950374. Its totient is φ = 18428950372.

The previous prime is 18428950301. The next prime is 18428950391. The reversal of 18428950373 is 37305982481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18231210529 + 197739844 = 135023^2 + 14062^2 .

It is a cyclic number.

It is not a de Polignac number, because 18428950373 - 2³² = 14133983077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18428950873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9214475186 + 9214475187.

It is an arithmetic number, because the mean of its divisors is an integer number (9214475187).

Almost surely, 2^18428950373 is an apocalyptic number.

It is an amenable number.

18428950373 is a deficient number, since it is larger than the sum of its proper divisors (1).

18428950373 is an equidigital number, since it uses as much as digits as its factorization.

18428950373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 18428950373 in words is "eighteen billion, four hundred twenty-eight million, nine hundred fifty thousand, three hundred seventy-three".