3645369009 has 8 divisors (see below), whose sum is σ = 5400546720. Its totient is φ = 2430245988.

The previous prime is 3645368977. The next prime is 3645369017. The reversal of 3645369009 is 9009635463.

It is a happy number.

It is not a de Polignac number, because 3645369009 - 2⁵ = 3645368977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3645369709) 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, 67506807 + ... + 67506860.

It is an arithmetic number, because the mean of its divisors is an integer number (675068340).

Almost surely, 2^3645369009 is an apocalyptic number.

It is an amenable number.

3645369009 is a deficient number, since it is larger than the sum of its proper divisors (1755177711).

3645369009 is a wasteful number, since it uses less digits than its factorization.

3645369009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135013676 (or 135013670 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 3645369009 is about 60376.8913492571. The cubic root of 3645369009 is about 1539.0302841261.

The spelling of 3645369009 in words is "three billion, six hundred forty-five million, three hundred sixty-nine thousand, nine".