3645040645 has 16 divisors (see below), whose sum is σ = 4433472000. Its totient is φ = 2876485248.

The previous prime is 3645040643. The next prime is 3645040673. The reversal of 3645040645 is 5460405463.

It is a cyclic number.

It is not a de Polignac number, because 3645040645 - 2¹ = 3645040643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645040643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505576 + ... + 512734.

It is an arithmetic number, because the mean of its divisors is an integer number (277092000).

Almost surely, 2^3645040645 is an apocalyptic number.

It is an amenable number.

3645040645 is a deficient number, since it is larger than the sum of its proper divisors (788431355).

3645040645 is a wasteful number, since it uses less digits than its factorization.

3645040645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532.

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 3645040645 is about 60374.1720026039. The cubic root of 3645040645 is about 1538.9840723147.

The spelling of 3645040645 in words is "three billion, six hundred forty-five million, forty thousand, six hundred forty-five".