18088642 has 16 divisors (see below), whose sum is σ = 31876992. Its totient is φ = 7589520.

The previous prime is 18088621. The next prime is 18088643. The reversal of 18088642 is 24688081.

It is not an unprimeable number, because it can be changed into a prime (18088643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31338 + ... + 31909.

It is an arithmetic number, because the mean of its divisors is an integer number (1992312).

Almost surely, 2^18088642 is an apocalyptic number.

18088642 is a deficient number, since it is larger than the sum of its proper divisors (13788350).

18088642 is a wasteful number, since it uses less digits than its factorization.

18088642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63273.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 18088642 is about 4253.0744174068. The cubic root of 18088642 is about 262.5036347191.

The spelling of 18088642 in words is "eighteen million, eighty-eight thousand, six hundred forty-two".