18065829 has 4 divisors (see below), whose sum is σ = 24087776. Its totient is φ = 12043884.

The previous prime is 18065819. The next prime is 18065837. The reversal of 18065829 is 92856081.

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: 92856081 = 3 ⋅30952027.

It is not a de Polignac number, because 18065829 - 2⁸ = 18065573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065809) 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, 3010969 + ... + 3010974.

It is an arithmetic number, because the mean of its divisors is an integer number (6021944).

Almost surely, 2^18065829 is an apocalyptic number.

It is an amenable number.

18065829 is a deficient number, since it is larger than the sum of its proper divisors (6021947).

18065829 is an equidigital number, since it uses as much as digits as its factorization.

18065829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021946.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 18065829 is about 4250.3916290149. The cubic root of 18065829 is about 262.3932336785.

The spelling of 18065829 in words is "eighteen million, sixty-five thousand, eight hundred twenty-nine".