3521194668 has 36 divisors (see below), whose sum is σ = 8987222608. Its totient is φ = 1162334880.

The previous prime is 3521194643. The next prime is 3521194679. The reversal of 3521194668 is 8664911253.

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, 471103 + ... + 478518.

Almost surely, 2^3521194668 is an apocalyptic number.

It is an amenable number.

3521194668 is an abundant number, since it is smaller than the sum of its proper divisors (5466027940).

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

3521194668 is a wasteful number, since it uses less digits than its factorization.

3521194668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949734 (or 949729 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3521194668 is about 59339.6551051656. The cubic root of 3521194668 is about 1521.3530582334.

The spelling of 3521194668 in words is "three billion, five hundred twenty-one million, one hundred ninety-four thousand, six hundred sixty-eight".