18934829 has 2 divisors, whose sum is σ = 18934830. Its totient is φ = 18934828.

The previous prime is 18934807. The next prime is 18934847. The reversal of 18934829 is 92843981.

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., 14212900 + 4721929 = 3770^2 + 2173^2 .

It is an emirp because it is prime and its reverse (92843981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18934829 - 2¹⁶ = 18869293 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 18934829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18934879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9467414 + 9467415.

It is an arithmetic number, because the mean of its divisors is an integer number (9467415).

Almost surely, 2^18934829 is an apocalyptic number.

It is an amenable number.

18934829 is a deficient number, since it is larger than the sum of its proper divisors (1).

18934829 is an equidigital number, since it uses as much as digits as its factorization.

18934829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 18934829 is about 4351.4168956789. The cubic root of 18934829 is about 266.5347234422.

The spelling of 18934829 in words is "eighteen million, nine hundred thirty-four thousand, eight hundred twenty-nine".