18465144 has 32 divisors (see below), whose sum is σ = 46752000. Its totient is φ = 6076512.

The previous prime is 18465143. The next prime is 18465151. The reversal of 18465144 is 44156481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18465143) 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 in 7 ways as a sum of consecutive naturals, for example, 2974 + ... + 6765.

It is an arithmetic number, because the mean of its divisors is an integer number (1461000).

Almost surely, 2^18465144 is an apocalyptic number.

It is an amenable number.

18465144 is an abundant number, since it is smaller than the sum of its proper divisors (28286856).

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

18465144 is a wasteful number, since it uses less digits than its factorization.

18465144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9827 (or 9823 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 18465144 is about 4297.1087954577. The cubic root of 18465144 is about 264.3124171009.

The spelling of 18465144 in words is "eighteen million, four hundred sixty-five thousand, one hundred forty-four".