3640729960 has 32 divisors (see below), whose sum is σ = 9361877760. Its totient is φ = 1248250176.

The previous prime is 3640729957. The next prime is 3640730029. The reversal of 3640729960 is 699270463.

It is a self number, because there is not a number n which added to its sum of digits gives 3640729960.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501024 + ... + 6501583.

It is an arithmetic number, because the mean of its divisors is an integer number (292558680).

Almost surely, 2^3640729960 is an apocalyptic number.

It is an amenable number.

3640729960 is an abundant number, since it is smaller than the sum of its proper divisors (5721147800).

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

3640729960 is a wasteful number, since it uses less digits than its factorization.

3640729960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002625 (or 13002621 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 3640729960 is about 60338.4616973287. The cubic root of 3640729960 is about 1538.3771570463.

The spelling of 3640729960 in words is "three billion, six hundred forty million, seven hundred twenty-nine thousand, nine hundred sixty".