18099029 has 4 divisors (see below), whose sum is σ = 19491276. Its totient is φ = 16706784.

The previous prime is 18099013. The next prime is 18099041. The reversal of 18099029 is 92099081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4972900 + 13126129 = 2230^2 + 3623^2 .

It is a cyclic number.

It is not a de Polignac number, because 18099029 - 2⁴ = 18099013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18098983 and 18099001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18099049) 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 3 ways as a sum of consecutive naturals, for example, 696104 + ... + 696129.

It is an arithmetic number, because the mean of its divisors is an integer number (4872819).

Almost surely, 2^18099029 is an apocalyptic number.

It is an amenable number.

18099029 is a deficient number, since it is larger than the sum of its proper divisors (1392247).

18099029 is a wasteful number, since it uses less digits than its factorization.

18099029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392246.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 18099029 is about 4254.2953588109. The cubic root of 18099029 is about 262.5538707276.

The spelling of 18099029 in words is "eighteen million, ninety-nine thousand, twenty-nine".