18058330 has 8 divisors (see below), whose sum is σ = 32505012. Its totient is φ = 7223328.

The previous prime is 18058321. The next prime is 18058333. The reversal of 18058330 is 3385081.

It can be written as a sum of positive squares in 2 ways, for example, as 17884441 + 173889 = 4229^2 + 417^2 .

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

It is a super-2 number, since 2×18058330² = 652206564777800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18058333) by changing a digit.

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, 902907 + ... + 902926.

Almost surely, 2^18058330 is an apocalyptic number.

18058330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18058330 is a deficient number, since it is larger than the sum of its proper divisors (14446682).

18058330 is a wasteful number, since it uses less digits than its factorization.

18058330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805840.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18058330 is about 4249.5093834465. The cubic root of 18058330 is about 262.3569227849.

The spelling of 18058330 in words is "eighteen million, fifty-eight thousand, three hundred thirty".