18883873 has 2 divisors, whose sum is σ = 18883874. Its totient is φ = 18883872.

The previous prime is 18883849. The next prime is 18883913. The reversal of 18883873 is 37838881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18766224 + 117649 = 4332^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 18883873 - 2⁵ = 18883841 is a prime.

It is not a weakly prime, because it can be changed into another prime (18883273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9441936 + 9441937.

It is an arithmetic number, because the mean of its divisors is an integer number (9441937).

Almost surely, 2^18883873 is an apocalyptic number.

It is an amenable number.

18883873 is a deficient number, since it is larger than the sum of its proper divisors (1).

18883873 is an equidigital number, since it uses as much as digits as its factorization.

18883873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 46.

The square root of 18883873 is about 4345.5578468132. The cubic root of 18883873 is about 266.2954158533.

The spelling of 18883873 in words is "eighteen million, eight hundred eighty-three thousand, eight hundred seventy-three".