4180591 has 4 divisors (see below), whose sum is σ = 4190472. Its totient is φ = 4170712.

The previous prime is 4180541. The next prime is 4180607. The reversal of 4180591 is 1950814.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4180591 - 2¹¹ = 4178543 is a prime.

It is a super-2 number, since 2×4180591² = 34954682218562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4180541) 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, 4276 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (1047618).

Almost surely, 2^4180591 is an apocalyptic number.

4180591 is a deficient number, since it is larger than the sum of its proper divisors (9881).

4180591 is an equidigital number, since it uses as much as digits as its factorization.

4180591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 4180591 is about 2044.6493586921. The cubic root of 4180591 is about 161.0939487422.

The spelling of 4180591 in words is "four million, one hundred eighty thousand, five hundred ninety-one".