18300829 has 4 divisors (see below), whose sum is σ = 18795484. Its totient is φ = 17806176.

The previous prime is 18300767. The next prime is 18300851. The reversal of 18300829 is 92800381.

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 16605625 + 1695204 = 4075^2 + 1302^2 .

It is not a de Polignac number, because 18300829 - 2¹¹ = 18298781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18300829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18300859) 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, 247272 + ... + 247345.

It is an arithmetic number, because the mean of its divisors is an integer number (4698871).

Almost surely, 2^18300829 is an apocalyptic number.

It is an amenable number.

18300829 is a deficient number, since it is larger than the sum of its proper divisors (494655).

18300829 is an equidigital number, since it uses as much as digits as its factorization.

18300829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494654.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18300829 is about 4277.9468206138. The cubic root of 18300829 is about 263.5260713989.

The spelling of 18300829 in words is "eighteen million, three hundred thousand, eight hundred twenty-nine".