3645899896 has 32 divisors (see below), whose sum is σ = 6893580240. Its totient is φ = 1807642368.

The previous prime is 3645899893. The next prime is 3645900047. The reversal of 3645899896 is 6989985463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645899893) 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, 1749271 + ... + 1751353.

Almost surely, 2^3645899896 is an apocalyptic number.

It is an amenable number.

3645899896 is a deficient number, since it is larger than the sum of its proper divisors (3247680344).

3645899896 is a wasteful number, since it uses less digits than its factorization.

3645899896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 3819 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 67.

The square root of 3645899896 is about 60381.2876311859. The cubic root of 3645899896 is about 1539.1049918359.

The spelling of 3645899896 in words is "three billion, six hundred forty-five million, eight hundred ninety-nine thousand, eight hundred ninety-six".