18822829 has 4 divisors (see below), whose sum is σ = 19141920. Its totient is φ = 18503740.

The previous prime is 18822821. The next prime is 18822857. The reversal of 18822829 is 92822881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92822881 = 29 ⋅3200789.

It is a cyclic number.

It is not a de Polignac number, because 18822829 - 2³ = 18822821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18822791 and 18822800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18822821) 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, 159457 + ... + 159574.

It is an arithmetic number, because the mean of its divisors is an integer number (4785480).

Almost surely, 2^18822829 is an apocalyptic number.

It is an amenable number.

18822829 is a deficient number, since it is larger than the sum of its proper divisors (319091).

18822829 is an equidigital number, since it uses as much as digits as its factorization.

18822829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319090.

The product of its digits is 36864, while the sum is 40.

The square root of 18822829 is about 4338.5284371547. The cubic root of 18822829 is about 266.0081639569.

The spelling of 18822829 in words is "eighteen million, eight hundred twenty-two thousand, eight hundred twenty-nine".