18622673 has 2 divisors, whose sum is σ = 18622674. Its totient is φ = 18622672.

The previous prime is 18622613. The next prime is 18622687. The reversal of 18622673 is 37622681.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 543169 = 4252^2 + 737^2 .

It is a cyclic number.

It is not a de Polignac number, because 18622673 - 2¹⁰ = 18621649 is a prime.

It is not a weakly prime, because it can be changed into another prime (18622613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9311336 + 9311337.

It is an arithmetic number, because the mean of its divisors is an integer number (9311337).

Almost surely, 2^18622673 is an apocalyptic number.

It is an amenable number.

18622673 is a deficient number, since it is larger than the sum of its proper divisors (1).

18622673 is an equidigital number, since it uses as much as digits as its factorization.

18622673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 18622673 is about 4315.3995180053. The cubic root of 18622673 is about 265.0619197897.

The spelling of 18622673 in words is "eighteen million, six hundred twenty-two thousand, six hundred seventy-three".