18829705 has 4 divisors (see below), whose sum is σ = 22595652. Its totient is φ = 15063760.

The previous prime is 18829687. The next prime is 18829717. The reversal of 18829705 is 50792881.

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 5257849 + 13571856 = 2293^2 + 3684^2 .

It is not a de Polignac number, because 18829705 - 2¹¹ = 18827657 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1882966 + ... + 1882975.

It is an arithmetic number, because the mean of its divisors is an integer number (5648913).

Almost surely, 2^18829705 is an apocalyptic number.

It is an amenable number.

18829705 is a deficient number, since it is larger than the sum of its proper divisors (3765947).

18829705 is an equidigital number, since it uses as much as digits as its factorization.

18829705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765946.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 18829705 is about 4339.3207993878. The cubic root of 18829705 is about 266.0405510379.

The spelling of 18829705 in words is "eighteen million, eight hundred twenty-nine thousand, seven hundred five".