18788941 has 2 divisors, whose sum is σ = 18788942. Its totient is φ = 18788940.

The previous prime is 18788921. The next prime is 18788969. The reversal of 18788941 is 14988781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 427716 = 4285^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 18788941 - 2⁵ = 18788909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18788891 and 18788900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18788911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9394470 + 9394471.

It is an arithmetic number, because the mean of its divisors is an integer number (9394471).

Almost surely, 2^18788941 is an apocalyptic number.

It is an amenable number.

18788941 is a deficient number, since it is larger than the sum of its proper divisors (1).

18788941 is an equidigital number, since it uses as much as digits as its factorization.

18788941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 46.

The square root of 18788941 is about 4334.6212060571. The cubic root of 18788941 is about 265.8484306198.

The spelling of 18788941 in words is "eighteen million, seven hundred eighty-eight thousand, nine hundred forty-one".