18442829 has 8 divisors (see below), whose sum is σ = 18934080. Its totient is φ = 17954496.

The previous prime is 18442817. The next prime is 18442859. The reversal of 18442829 is 92824481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18442829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18442792 and 18442801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18442859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18389 + ... + 19365.

It is an arithmetic number, because the mean of its divisors is an integer number (2366760).

Almost surely, 2^18442829 is an apocalyptic number.

It is an amenable number.

18442829 is a deficient number, since it is larger than the sum of its proper divisors (491251).

18442829 is an equidigital number, since it uses as much as digits as its factorization.

18442829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its digits is 36864, while the sum is 38.

The square root of 18442829 is about 4294.5114972486. The cubic root of 18442829 is about 264.2059009330.

The spelling of 18442829 in words is "eighteen million, four hundred forty-two thousand, eight hundred twenty-nine".