18368829 has 8 divisors (see below), whose sum is σ = 27213120. Its totient is φ = 12245868.

The previous prime is 18368827. The next prime is 18368837. The reversal of 18368829 is 92886381.

It is not a de Polignac number, because 18368829 - 2¹ = 18368827 is a prime.

It is a super-3 number, since 3×18368829³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368821) 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 in 7 ways as a sum of consecutive naturals, for example, 340137 + ... + 340190.

It is an arithmetic number, because the mean of its divisors is an integer number (3401640).

Almost surely, 2^18368829 is an apocalyptic number.

It is an amenable number.

18368829 is a deficient number, since it is larger than the sum of its proper divisors (8844291).

18368829 is an equidigital number, since it uses as much as digits as its factorization.

18368829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680336 (or 680330 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18368829 is about 4285.8871893693. The cubic root of 18368829 is about 263.8520607089.

The spelling of 18368829 in words is "eighteen million, three hundred sixty-eight thousand, eight hundred twenty-nine".