3661449252 has 12 divisors (see below), whose sum is σ = 8543381616. Its totient is φ = 1220483080.

The previous prime is 3661449229. The next prime is 3661449329. The reversal of 3661449252 is 2529441663.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152560374 + ... + 152560397.

It is an arithmetic number, because the mean of its divisors is an integer number (711948468).

Almost surely, 2^3661449252 is an apocalyptic number.

It is an amenable number.

3661449252 is an abundant number, since it is smaller than the sum of its proper divisors (4881932364).

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

3661449252 is a wasteful number, since it uses less digits than its factorization.

3661449252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305120778 (or 305120776 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 3661449252 is about 60509.9103618573. The cubic root of 3661449252 is about 1541.2899255915.

The spelling of 3661449252 in words is "three billion, six hundred sixty-one million, four hundred forty-nine thousand, two hundred fifty-two".