18245330 has 32 divisors (see below), whose sum is σ = 33948288. Its totient is φ = 7056000.

The previous prime is 18245299. The next prime is 18245333. The reversal of 18245330 is 3354281.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18245330.

It is not an unprimeable number, because it can be changed into a prime (18245333) 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, 64790 + ... + 65070.

It is an arithmetic number, because the mean of its divisors is an integer number (1060884).

Almost surely, 2^18245330 is an apocalyptic number.

18245330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18245330 is a deficient number, since it is larger than the sum of its proper divisors (15702958).

18245330 is a wasteful number, since it uses less digits than its factorization.

18245330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482.

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

The square root of 18245330 is about 4271.4552555306. The cubic root of 18245330 is about 263.2594123907.

The spelling of 18245330 in words is "eighteen million, two hundred forty-five thousand, three hundred thirty".