3598181 has 4 divisors (see below), whose sum is σ = 3638700. Its totient is φ = 3557664.

The previous prime is 3598157. The next prime is 3598211. The reversal of 3598181 is 1818953.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1818953 = 941 ⋅1933.

It can be written as a sum of positive squares in 2 ways, for example, as 1985281 + 1612900 = 1409^2 + 1270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3598181 is a prime.

It is a super-2 number, since 2×3598181² = 25893813017522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3598141) 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, 20126 + ... + 20303.

It is an arithmetic number, because the mean of its divisors is an integer number (909675).

Almost surely, 2^3598181 is an apocalyptic number.

It is an amenable number.

3598181 is a deficient number, since it is larger than the sum of its proper divisors (40519).

3598181 is an equidigital number, since it uses as much as digits as its factorization.

3598181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40518.

The product of its digits is 8640, while the sum is 35.

The square root of 3598181 is about 1896.8871869460. The cubic root of 3598181 is about 153.2360688547.

The spelling of 3598181 in words is "three million, five hundred ninety-eight thousand, one hundred eighty-one".