3645321371 has 4 divisors (see below), whose sum is σ = 3645442152. Its totient is φ = 3645200592.

The previous prime is 3645321349. The next prime is 3645321467. The reversal of 3645321371 is 1731235463.

3645321371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1731235463 = 23497 ⋅73679.

It is a cyclic number.

It is not a de Polignac number, because 3645321371 - 2¹⁸ = 3645059227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645321311) 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, 28280 + ... + 89946.

It is an arithmetic number, because the mean of its divisors is an integer number (911360538).

Almost surely, 2^3645321371 is an apocalyptic number.

3645321371 is a deficient number, since it is larger than the sum of its proper divisors (120781).

3645321371 is an equidigital number, since it uses as much as digits as its factorization.

3645321371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120780.

The product of its digits is 45360, while the sum is 35.

The square root of 3645321371 is about 60376.4968427285. The cubic root of 3645321371 is about 1539.0235800362.

The spelling of 3645321371 in words is "three billion, six hundred forty-five million, three hundred twenty-one thousand, three hundred seventy-one".