3649561960 has 32 divisors (see below), whose sum is σ = 8958016800. Its totient is φ = 1327113280.

The previous prime is 3649561957. The next prime is 3649561963. The reversal of 3649561960 is 691659463.

It is an interprime number because it is at equal distance from previous prime (3649561957) and next prime (3649561963).

It is not an unprimeable number, because it can be changed into a prime (3649561963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4146790 + ... + 4147669.

It is an arithmetic number, because the mean of its divisors is an integer number (279938025).

Almost surely, 2^3649561960 is an apocalyptic number.

It is an amenable number.

3649561960 is an abundant number, since it is smaller than the sum of its proper divisors (5308454840).

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

3649561960 is a wasteful number, since it uses less digits than its factorization.

3649561960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8294481 (or 8294477 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 3649561960 is about 60411.6045143646. The cubic root of 3649561960 is about 1539.6201289396.

The spelling of 3649561960 in words is "three billion, six hundred forty-nine million, five hundred sixty-one thousand, nine hundred sixty".