3641805564 has 12 divisors (see below), whose sum is σ = 8497546344. Its totient is φ = 1213935184.

The previous prime is 3641805551. The next prime is 3641805571. The reversal of 3641805564 is 4655081463.

3641805564 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 151741887 + ... + 151741910.

It is an arithmetic number, because the mean of its divisors is an integer number (708128862).

Almost surely, 2^3641805564 is an apocalyptic number.

It is an amenable number.

3641805564 is an abundant number, since it is smaller than the sum of its proper divisors (4855740780).

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

3641805564 is a wasteful number, since it uses less digits than its factorization.

3641805564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303483804 (or 303483802 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 3641805564 is about 60347.3741268002. The cubic root of 3641805564 is about 1538.5286396443.

The spelling of 3641805564 in words is "three billion, six hundred forty-one million, eight hundred five thousand, five hundred sixty-four".