18070188 has 12 divisors (see below), whose sum is σ = 42163800. Its totient is φ = 6023392.

The previous prime is 18070187. The next prime is 18070253. The reversal of 18070188 is 88107081.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18070183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752913 + ... + 752936.

It is an arithmetic number, because the mean of its divisors is an integer number (3513650).

Almost surely, 2^18070188 is an apocalyptic number.

It is an amenable number.

18070188 is an abundant number, since it is smaller than the sum of its proper divisors (24093612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18070188 is a wasteful number, since it uses less digits than its factorization.

18070188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505856 (or 1505854 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 18070188 is about 4250.9043743655. The cubic root of 18070188 is about 262.4143357662.

The spelling of 18070188 in words is "eighteen million, seventy thousand, one hundred eighty-eight".