3645789120 has 84 divisors (see below), whose sum is σ = 12540005400. Its totient is φ = 972209664.

The previous prime is 3645789109. The next prime is 3645789197. The reversal of 3645789120 is 219875463.

3645789120 is a `hidden beast` number, since 3 + 64 + 578 + 9 + 12 + 0 = 666.

3645789120 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

3645789120 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 630070 + ... + 635829.

It is a 1-persistent number, because it is pandigital, but 2⋅3645789120 = 7291578240 is not.

Almost surely, 2^3645789120 is an apocalyptic number.

3645789120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3645789120 is an abundant number, since it is smaller than the sum of its proper divisors (8894216280).

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

3645789120 is a wasteful number, since it uses less digits than its factorization.

3645789120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265922 (or 1265909 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 3645789120 is about 60380.3703201628. The cubic root of 3645789120 is about 1539.0894037665.

The spelling of 3645789120 in words is "three billion, six hundred forty-five million, seven hundred eighty-nine thousand, one hundred twenty".