18030136 has 16 divisors (see below), whose sum is σ = 34361640. Its totient is φ = 8867040.

The previous prime is 18030121. The next prime is 18030143. The reversal of 18030136 is 63103081.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 17986 + ... + 18961.

Almost surely, 2^18030136 is an apocalyptic number.

It is an amenable number.

18030136 is a deficient number, since it is larger than the sum of its proper divisors (16331504).

18030136 is a wasteful number, since it uses less digits than its factorization.

18030136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37014 (or 37010 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 18030136 is about 4246.1907634961. The cubic root of 18030136 is about 262.2203146573.

The spelling of 18030136 in words is "eighteen million, thirty thousand, one hundred thirty-six".