18045430 has 32 divisors (see below), whose sum is σ = 35288064. Its totient is φ = 6604416.

The previous prime is 18045427. The next prime is 18045437. The reversal of 18045430 is 3454081.

It is a junction number, because it is equal to n+sod(n) for n = 18045395 and 18045404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15964 + ... + 17056.

It is an arithmetic number, because the mean of its divisors is an integer number (1102752).

Almost surely, 2^18045430 is an apocalyptic number.

18045430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18045430 is a deficient number, since it is larger than the sum of its proper divisors (17242634).

18045430 is a wasteful number, since it uses less digits than its factorization.

18045430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 18045430 is about 4247.9912900099. The cubic root of 18045430 is about 262.2944361927.

The spelling of 18045430 in words is "eighteen million, forty-five thousand, four hundred thirty".