18073829 has 4 divisors (see below), whose sum is σ = 18178476. Its totient is φ = 17969184.

The previous prime is 18073823. The next prime is 18073843. The reversal of 18073829 is 92837081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92837081 = 1009 ⋅92009.

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 643204 = 4175^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 18073829 - 2⁴ = 18073813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18073792 and 18073801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52064 + ... + 52409.

It is an arithmetic number, because the mean of its divisors is an integer number (4544619).

Almost surely, 2^18073829 is an apocalyptic number.

It is an amenable number.

18073829 is a deficient number, since it is larger than the sum of its proper divisors (104647).

18073829 is a wasteful number, since it uses less digits than its factorization.

18073829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104646.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 18073829 is about 4251.3326146045. The cubic root of 18073829 is about 262.4319593872.

The spelling of 18073829 in words is "eighteen million, seventy-three thousand, eight hundred twenty-nine".