3644352612 has 18 divisors (see below), whose sum is σ = 9212113638. Its totient is φ = 1214784192.

The previous prime is 3644352581. The next prime is 3644352631. The reversal of 3644352612 is 2162534463.

3644352612 is a `hidden beast` number, since 3 + 6 + 4 + 4 + 35 + 2 + 612 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2916648036 + 727704576 = 54006^2 + 26976^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 101232017 = 3644352612 / (3 + 6 + 4 + 4 + 3 + 5 + 2 + 6 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50615973 + ... + 50616044.

It is an arithmetic number, because the mean of its divisors is an integer number (511784091).

Almost surely, 2^3644352612 is an apocalyptic number.

It is an amenable number.

3644352612 is an abundant number, since it is smaller than the sum of its proper divisors (5567761026).

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

3644352612 is a wasteful number, since it uses less digits than its factorization.

3644352612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101232027 (or 101232022 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 3644352612 is about 60368.4736596843. The cubic root of 3644352612 is about 1538.8872340293.

The spelling of 3644352612 in words is "three billion, six hundred forty-four million, three hundred fifty-two thousand, six hundred twelve".