4181816 has 16 divisors (see below), whose sum is σ = 7864800. Its totient is φ = 2084544.

The previous prime is 4181797. The next prime is 4181819. The reversal of 4181816 is 6181814.

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

It is a nialpdrome in base 9.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4181819) 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, 3140 + ... + 4268.

It is an arithmetic number, because the mean of its divisors is an integer number (491550).

Almost surely, 2^4181816 is an apocalyptic number.

It is an amenable number.

4181816 is a deficient number, since it is larger than the sum of its proper divisors (3682984).

4181816 is a wasteful number, since it uses less digits than its factorization.

4181816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1594 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 4181816 is about 2044.9488991170. The cubic root of 4181816 is about 161.1096818299.

The spelling of 4181816 in words is "four million, one hundred eighty-one thousand, eight hundred sixteen".