18630058 has 4 divisors (see below), whose sum is σ = 27945090. Its totient is φ = 9315028.

The previous prime is 18630049. The next prime is 18630061. The reversal of 18630058 is 85003681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15233409 + 3396649 = 3903^2 + 1843^2 .

It is a super-2 number, since 2×18630058² = 694158122166728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4657513 + ... + 4657516.

Almost surely, 2^18630058 is an apocalyptic number.

18630058 is a deficient number, since it is larger than the sum of its proper divisors (9315032).

18630058 is an equidigital number, since it uses as much as digits as its factorization.

18630058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315031.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18630058 is about 4316.2550897740. The cubic root of 18630058 is about 265.0969527766.

The spelling of 18630058 in words is "eighteen million, six hundred thirty thousand, fifty-eight".