4180005 has 20 divisors (see below), whose sum is σ = 7493772. Its totient is φ = 2229120.

The previous prime is 4179979. The next prime is 4180051. The reversal of 4180005 is 5000814.

It can be written as a sum of positive squares in 2 ways, for example, as 1920996 + 2259009 = 1386^2 + 1503^2 .

It is not a de Polignac number, because 4180005 - 2⁶ = 4179941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4180005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4756 + ... + 5565.

Almost surely, 2^4180005 is an apocalyptic number.

4180005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4180005 is a deficient number, since it is larger than the sum of its proper divisors (3313767).

4180005 is a wasteful number, since it uses less digits than its factorization.

4180005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338 (or 10329 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 4180005 is about 2044.5060528157. The cubic root of 4180005 is about 161.0864214599.

Adding to 4180005 its reverse (5000814), we get a palindrome (9180819).

The spelling of 4180005 in words is "four million, one hundred eighty thousand, five".