18074830 has 16 divisors (see below), whose sum is σ = 33657120. Its totient is φ = 6980512.

The previous prime is 18074789. The next prime is 18074831. The reversal of 18074830 is 3847081.

It is a happy number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18074792 and 18074801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18074831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30874 + ... + 31453.

It is an arithmetic number, because the mean of its divisors is an integer number (2103570).

Almost surely, 2^18074830 is an apocalyptic number.

18074830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18074830 is a deficient number, since it is larger than the sum of its proper divisors (15582290).

18074830 is a wasteful number, since it uses less digits than its factorization.

18074830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62363.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18074830 is about 4251.4503407661. The cubic root of 18074830 is about 262.4368041370.

The spelling of 18074830 in words is "eighteen million, seventy-four thousand, eight hundred thirty".