18135058 has 4 divisors (see below), whose sum is σ = 27202590. Its totient is φ = 9067528.

The previous prime is 18135053. The next prime is 18135067. The reversal of 18135058 is 85053181.

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., 16426809 + 1708249 = 4053^2 + 1307^2 .

It is not an unprimeable number, because it can be changed into a prime (18135053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4533763 + ... + 4533766.

Almost surely, 2^18135058 is an apocalyptic number.

18135058 is a deficient number, since it is larger than the sum of its proper divisors (9067532).

18135058 is an equidigital number, since it uses as much as digits as its factorization.

18135058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067531.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 18135058 is about 4258.5276798443. The cubic root of 18135058 is about 262.7279736850.

The spelling of 18135058 in words is "eighteen million, one hundred thirty-five thousand, fifty-eight".