3644189 has 4 divisors (see below), whose sum is σ = 3802656. Its totient is φ = 3485724.

The previous prime is 3644183. The next prime is 3644213. The reversal of 3644189 is 9814463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9814463 = 173 ⋅56731.

It is a cyclic number.

It is not a de Polignac number, because 3644189 - 2²⁰ = 2595613 is a prime.

It is a super-2 number, since 2×3644189² = 26560226935442, 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 (3644183) 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, 79199 + ... + 79244.

It is an arithmetic number, because the mean of its divisors is an integer number (950664).

Almost surely, 2^3644189 is an apocalyptic number.

It is an amenable number.

3644189 is a deficient number, since it is larger than the sum of its proper divisors (158467).

3644189 is a wasteful number, since it uses less digits than its factorization.

3644189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158466.

The product of its digits is 20736, while the sum is 35.

The square root of 3644189 is about 1908.9759034624. The cubic root of 3644189 is about 153.8864204408.

The spelling of 3644189 in words is "three million, six hundred forty-four thousand, one hundred eighty-nine".