3645321369 has 8 divisors (see below), whose sum is σ = 4872030240. Its totient is φ = 2424413376.

The previous prime is 3645321349. The next prime is 3645321467. The reversal of 3645321369 is 9631235463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3645321369 - 2¹⁵ = 3645288601 is a prime.

It is a super-2 number, since 2×3645321369² = 26576735766576068322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3645321369.

It is not an unprimeable number, because it can be changed into a prime (3645321349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448752 + ... + 1451265.

It is an arithmetic number, because the mean of its divisors is an integer number (609003780).

Almost surely, 2^3645321369 is an apocalyptic number.

It is an amenable number.

3645321369 is a deficient number, since it is larger than the sum of its proper divisors (1226708871).

3645321369 is a wasteful number, since it uses less digits than its factorization.

3645321369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900439.

The product of its digits is 349920, while the sum is 42.

The square root of 3645321369 is about 60376.4968261657. The cubic root of 3645321369 is about 1539.0235797548.

The spelling of 3645321369 in words is "three billion, six hundred forty-five million, three hundred twenty-one thousand, three hundred sixty-nine".