4978318 has 4 divisors (see below), whose sum is σ = 7467480. Its totient is φ = 2489158.

The previous prime is 4978291. The next prime is 4978349. The reversal of 4978318 is 8138794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8138794 = 2 ⋅4069397.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244578 + ... + 1244581.

It is an arithmetic number, because the mean of its divisors is an integer number (1866870).

Almost surely, 2^4978318 is an apocalyptic number.

4978318 is a deficient number, since it is larger than the sum of its proper divisors (2489162).

4978318 is a wasteful number, since it uses less digits than its factorization.

4978318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489161.

The product of its digits is 48384, while the sum is 40.

The square root of 4978318 is about 2231.2144675042. The cubic root of 4978318 is about 170.7500652034.

The spelling of 4978318 in words is "four million, nine hundred seventy-eight thousand, three hundred eighteen".