3645375216 has 80 divisors (see below), whose sum is σ = 10781762304. Its totient is φ = 1039675392.

The previous prime is 3645375193. The next prime is 3645375221. The reversal of 3645375216 is 6125735463.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184471 + ... + 203273.

Almost surely, 2^3645375216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3645375216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5390881152).

3645375216 is an abundant number, since it is smaller than the sum of its proper divisors (7136387088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645375216 is a wasteful number, since it uses less digits than its factorization.

3645375216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19398 (or 19392 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 3645375216 is about 60376.9427513517. The cubic root of 3645375216 is about 1539.0311576321.

The spelling of 3645375216 in words is "three billion, six hundred forty-five million, three hundred seventy-five thousand, two hundred sixteen".