18071148 has 12 divisors (see below), whose sum is σ = 42166040. Its totient is φ = 6023712.

The previous prime is 18071143. The next prime is 18071149. The reversal of 18071148 is 84117081.

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 (18071143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752953 + ... + 752976.

Almost surely, 2^18071148 is an apocalyptic number.

It is an amenable number.

18071148 is an abundant number, since it is smaller than the sum of its proper divisors (24094892).

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

18071148 is a wasteful number, since it uses less digits than its factorization.

18071148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505936 (or 1505934 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 18071148 is about 4251.0172900142. The cubic root of 18071148 is about 262.4189827074.

The spelling of 18071148 in words is "eighteen million, seventy-one thousand, one hundred forty-eight".