18329705 has 4 divisors (see below), whose sum is σ = 21995652. Its totient is φ = 14663760.

The previous prime is 18329693. The next prime is 18329713. The reversal of 18329705 is 50792381.

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 2679769 + 15649936 = 1637^2 + 3956^2 .

It is not a de Polignac number, because 18329705 - 2⁸ = 18329449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832966 + ... + 1832975.

It is an arithmetic number, because the mean of its divisors is an integer number (5498913).

Almost surely, 2^18329705 is an apocalyptic number.

It is an amenable number.

18329705 is a deficient number, since it is larger than the sum of its proper divisors (3665947).

18329705 is an equidigital number, since it uses as much as digits as its factorization.

18329705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665946.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 18329705 is about 4281.3204738725. The cubic root of 18329705 is about 263.6646002798.

The spelling of 18329705 in words is "eighteen million, three hundred twenty-nine thousand, seven hundred five".