18627941 has 2 divisors, whose sum is σ = 18627942. Its totient is φ = 18627940.

The previous prime is 18627929. The next prime is 18627949. The reversal of 18627941 is 14972681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 8579041 = 3170^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 18627941 - 2¹⁴ = 18611557 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18627895 and 18627904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18627949) 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, 9313970 + 9313971.

It is an arithmetic number, because the mean of its divisors is an integer number (9313971).

Almost surely, 2^18627941 is an apocalyptic number.

It is an amenable number.

18627941 is a deficient number, since it is larger than the sum of its proper divisors (1).

18627941 is an equidigital number, since it uses as much as digits as its factorization.

18627941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 18627941 is about 4316.0098470694. The cubic root of 18627941 is about 265.0869110919.

The spelling of 18627941 in words is "eighteen million, six hundred twenty-seven thousand, nine hundred forty-one".