4981818 has 16 divisors (see below), whose sum is σ = 9987840. Its totient is φ = 1656576.

The previous prime is 4981811. The next prime is 4981861. The reversal of 4981818 is 8181894.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

4981818 is a modest number, since divided by 1818 gives 498 as remainder.

It is not an unprimeable number, because it can be changed into a prime (4981811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743 + ... + 4181.

It is an arithmetic number, because the mean of its divisors is an integer number (624240).

Almost surely, 2^4981818 is an apocalyptic number.

4981818 is an abundant number, since it is smaller than the sum of its proper divisors (5006022).

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

4981818 is a wasteful number, since it uses less digits than its factorization.

4981818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021.

The product of its digits is 18432, while the sum is 39.

The square root of 4981818 is about 2231.9986559136. The cubic root of 4981818 is about 170.7900710333.

The spelling of 4981818 in words is "four million, nine hundred eighty-one thousand, eight hundred eighteen".