4633981 has 16 divisors (see below), whose sum is σ = 5277888. Its totient is φ = 4032000.

The previous prime is 4633969. The next prime is 4633999. The reversal of 4633981 is 1893364.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4633981 is a prime.

It is a super-2 number, since 2×4633981² = 42947559816722, which contains 22 as substring.

4633981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4633901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45831 + ... + 45931.

It is an arithmetic number, because the mean of its divisors is an integer number (329868).

Almost surely, 2^4633981 is an apocalyptic number.

It is an amenable number.

4633981 is a deficient number, since it is larger than the sum of its proper divisors (643907).

4633981 is a wasteful number, since it uses less digits than its factorization.

4633981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 15552, while the sum is 34.

The square root of 4633981 is about 2152.6683441719. The cubic root of 4633981 is about 166.7188667603.

It can be divided in two parts, 463 and 3981, that added together give a palindrome (4444).

The spelling of 4633981 in words is "four million, six hundred thirty-three thousand, nine hundred eighty-one".