18841873 has 2 divisors, whose sum is σ = 18841874. Its totient is φ = 18841872.

The previous prime is 18841859. The next prime is 18841897. The reversal of 18841873 is 37814881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11068929 + 7772944 = 3327^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 18841873 - 2⁵ = 18841841 is a prime.

It is not a weakly prime, because it can be changed into another prime (18841073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9420936 + 9420937.

It is an arithmetic number, because the mean of its divisors is an integer number (9420937).

Almost surely, 2^18841873 is an apocalyptic number.

It is an amenable number.

18841873 is a deficient number, since it is larger than the sum of its proper divisors (1).

18841873 is an equidigital number, since it uses as much as digits as its factorization.

18841873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 40.

The square root of 18841873 is about 4340.7226356910. The cubic root of 18841873 is about 266.0978449851.

The spelling of 18841873 in words is "eighteen million, eight hundred forty-one thousand, eight hundred seventy-three".