654432018 has 16 divisors (see below), whose sum is σ = 1365771456. Its totient is φ = 208659440.

The previous prime is 654432001. The next prime is 654432019. The reversal of 654432018 is 810234456.

It is a self number, because there is not a number n which added to its sum of digits gives 654432018.

It is not an unprimeable number, because it can be changed into a prime (654432019) 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 7 ways as a sum of consecutive naturals, for example, 2370993 + ... + 2371268.

It is an arithmetic number, because the mean of its divisors is an integer number (85360716).

Almost surely, 2^654432018 is an apocalyptic number.

654432018 is an abundant number, since it is smaller than the sum of its proper divisors (711339438).

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

654432018 is a wasteful number, since it uses less digits than its factorization.

654432018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742289.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 654432018 is about 25581.8689309440. The cubic root of 654432018 is about 868.2034614396.

The spelling of 654432018 in words is "six hundred fifty-four million, four hundred thirty-two thousand, eighteen".