18342530 has 8 divisors (see below), whose sum is σ = 33016572. Its totient is φ = 7337008.

The previous prime is 18342503. The next prime is 18342547. The reversal of 18342530 is 3524381.

It can be written as a sum of positive squares in 2 ways, for example, as 17147881 + 1194649 = 4141^2 + 1093^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18342530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917117 + ... + 917136.

Almost surely, 2^18342530 is an apocalyptic number.

18342530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18342530 is a deficient number, since it is larger than the sum of its proper divisors (14674042).

18342530 is a wasteful number, since it uses less digits than its factorization.

18342530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834260.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 18342530 is about 4282.8179975339. The cubic root of 18342530 is about 263.7260799043.

The spelling of 18342530 in words is "eighteen million, three hundred forty-two thousand, five hundred thirty".