4816981 has 4 divisors (see below), whose sum is σ = 5187532. Its totient is φ = 4446432.

The previous prime is 4816969. The next prime is 4817003. The reversal of 4816981 is 1896184.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1522756 + 3294225 = 1234^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 4816981 - 2⁵ = 4816949 is a prime.

It is a super-2 number, since 2×4816981² = 46406611908722, which contains 22 as substring.

It is a Duffinian number.

4816981 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4816981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4816901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185256 + ... + 185281.

It is an arithmetic number, because the mean of its divisors is an integer number (1296883).

Almost surely, 2^4816981 is an apocalyptic number.

It is an amenable number.

4816981 is a deficient number, since it is larger than the sum of its proper divisors (370551).

4816981 is a wasteful number, since it uses less digits than its factorization.

4816981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370550.

The product of its digits is 13824, while the sum is 37.

The square root of 4816981 is about 2194.7621739040. The cubic root of 4816981 is about 168.8852201964.

The spelling of 4816981 in words is "four million, eight hundred sixteen thousand, nine hundred eighty-one".