3645906912 has 72 divisors (see below), whose sum is σ = 10725591240. Its totient is φ = 1173392640.

The previous prime is 3645906899. The next prime is 3645906917. The reversal of 3645906912 is 2196095463.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645906917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209914 + ... + 226617.

It is an arithmetic number, because the mean of its divisors is an integer number (148966545).

Almost surely, 2^3645906912 is an apocalyptic number.

3645906912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3645906912 is an abundant number, since it is smaller than the sum of its proper divisors (7079684328).

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

3645906912 is a wasteful number, since it uses less digits than its factorization.

3645906912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436576 (or 436565 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 3645906912 is about 60381.3457286271. The cubic root of 3645906912 is about 1539.1059790959.

The spelling of 3645906912 in words is "three billion, six hundred forty-five million, nine hundred six thousand, nine hundred twelve".