18082429 has 4 divisors (see below), whose sum is σ = 18352384. Its totient is φ = 17812476.

The previous prime is 18082411. The next prime is 18082447. The reversal of 18082429 is 92428081.

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: 92428081 = 31 ⋅2981551.

It is an interprime number because it is at equal distance from previous prime (18082411) and next prime (18082447).

It is a cyclic number.

It is not a de Polignac number, because 18082429 - 2¹⁹ = 17558141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18082394 and 18082403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082829) 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, 134877 + ... + 135010.

It is an arithmetic number, because the mean of its divisors is an integer number (4588096).

Almost surely, 2^18082429 is an apocalyptic number.

It is an amenable number.

18082429 is a deficient number, since it is larger than the sum of its proper divisors (269955).

18082429 is an equidigital number, since it uses as much as digits as its factorization.

18082429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269954.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18082429 is about 4252.3439418749. The cubic root of 18082429 is about 262.4735767810.

The spelling of 18082429 in words is "eighteen million, eighty-two thousand, four hundred twenty-nine".