4418631 has 20 divisors (see below), whose sum is σ = 7544592. Its totient is φ = 2524608.

The previous prime is 4418627. The next prime is 4418633. The reversal of 4418631 is 1368144.

It is not a de Polignac number, because 4418631 - 2² = 4418627 is a prime.

It is a super-2 number, since 2×4418631² = 39048599828322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4418595 and 4418604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4418633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3330 + ... + 4463.

Almost surely, 2^4418631 is an apocalyptic number.

4418631 is a deficient number, since it is larger than the sum of its proper divisors (3125961).

4418631 is an equidigital number, since it uses as much as digits as its factorization.

4418631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812 (or 7803 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 4418631 is about 2102.0539955006. The cubic root of 4418631 is about 164.0952129054.

The spelling of 4418631 in words is "four million, four hundred eighteen thousand, six hundred thirty-one".