4197968646 has 32 divisors (see below), whose sum is σ = 8519510016. Its totient is φ = 1378860000.

The previous prime is 4197968609. The next prime is 4197968647. The reversal of 4197968646 is 6468697914.

It is a self number, because there is not a number n which added to its sum of digits gives 4197968646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4197968647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111451 + ... + 144281.

It is an arithmetic number, because the mean of its divisors is an integer number (266234688).

Almost surely, 2^4197968646 is an apocalyptic number.

4197968646 is an abundant number, since it is smaller than the sum of its proper divisors (4321541370).

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

4197968646 is a wasteful number, since it uses less digits than its factorization.

4197968646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33148.

The product of its digits is 15676416, while the sum is 60.

The square root of 4197968646 is about 64791.7328522706. The cubic root of 4197968646 is about 1613.1684894165.

The spelling of 4197968646 in words is "four billion, one hundred ninety-seven million, nine hundred sixty-eight thousand, six hundred forty-six".