4518978 has 16 divisors (see below), whose sum is σ = 9073920. Its totient is φ = 1500336.

The previous prime is 4518967. The next prime is 4518989. The reversal of 4518978 is 8798154.

It is an interprime number because it is at equal distance from previous prime (4518967) and next prime (4518989).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (567120).

Almost surely, 2^4518978 is an apocalyptic number.

4518978 is an abundant number, since it is smaller than the sum of its proper divisors (4554942).

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

4518978 is a wasteful number, since it uses less digits than its factorization.

4518978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001.

The product of its digits is 80640, while the sum is 42.

The square root of 4518978 is about 2125.7887947771. The cubic root of 4518978 is about 165.3281257393.

The spelling of 4518978 in words is "four million, five hundred eighteen thousand, nine hundred seventy-eight".