18816029 has 2 divisors, whose sum is σ = 18816030. Its totient is φ = 18816028.

The previous prime is 18816019. The next prime is 18816073. The reversal of 18816029 is 92061881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10824100 + 7991929 = 3290^2 + 2827^2 .

It is a cyclic number.

It is not a de Polignac number, because 18816029 - 2⁸ = 18815773 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18816029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18816019) 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, 9408014 + 9408015.

It is an arithmetic number, because the mean of its divisors is an integer number (9408015).

Almost surely, 2^18816029 is an apocalyptic number.

It is an amenable number.

18816029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18816029 is an equidigital number, since it uses as much as digits as its factorization.

18816029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 18816029 is about 4337.7446905045. The cubic root of 18816029 is about 265.9761270904.

The spelling of 18816029 in words is "eighteen million, eight hundred sixteen thousand, twenty-nine".