3651442668 has 36 divisors (see below), whose sum is σ = 9232463968. Its totient is φ = 1216827360.

The previous prime is 3651442651. The next prime is 3651442687. The reversal of 3651442668 is 8662441563.

3651442668 is a `hidden beast` number, since 36 + 514 + 42 + 6 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154230 + ... + 176322.

Almost surely, 2^3651442668 is an apocalyptic number.

It is an amenable number.

3651442668 is an abundant number, since it is smaller than the sum of its proper divisors (5581021300).

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

3651442668 is a wasteful number, since it uses less digits than its factorization.

3651442668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26694 (or 26689 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 3651442668 is about 60427.1682937402. The cubic root of 3651442668 is about 1539.8845514174.

The spelling of 3651442668 in words is "three billion, six hundred fifty-one million, four hundred forty-two thousand, six hundred sixty-eight".