18130294 has 64 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 6731424.

The previous prime is 18130291. The next prime is 18130309. The reversal of 18130294 is 49203181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169389 + ... + 169495.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^18130294 is an apocalyptic number.

18130294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18130294 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

18130294 is a wasteful number, since it uses less digits than its factorization.

18130294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18130294 is about 4257.9682948561. The cubic root of 18130294 is about 262.7049658424.

The spelling of 18130294 in words is "eighteen million, one hundred thirty thousand, two hundred ninety-four".