18009148 has 6 divisors (see below), whose sum is σ = 31516016. Its totient is φ = 9004572.

The previous prime is 18009143. The next prime is 18009151. The reversal of 18009148 is 84190081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009143) by changing a digit.

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, 2251140 + ... + 2251147.

Almost surely, 2^18009148 is an apocalyptic number.

It is an amenable number.

18009148 is a deficient number, since it is larger than the sum of its proper divisors (13506868).

18009148 is a wasteful number, since it uses less digits than its factorization.

18009148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502291 (or 4502289 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 18009148 is about 4243.7186523143. The cubic root of 18009148 is about 262.1185292023.

The spelling of 18009148 in words is "eighteen million, nine thousand, one hundred forty-eight".