1643224196 has 12 divisors (see below), whose sum is σ = 3026992080. Its totient is φ = 778369320.

The previous prime is 1643224189. The next prime is 1643224207. The reversal of 1643224196 is 6914223461.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 10810610 + ... + 10810761.

It is an arithmetic number, because the mean of its divisors is an integer number (252249340).

Almost surely, 2^1643224196 is an apocalyptic number.

It is an amenable number.

1643224196 is a deficient number, since it is larger than the sum of its proper divisors (1383767884).

1643224196 is a wasteful number, since it uses less digits than its factorization.

1643224196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21621394 (or 21621392 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 1643224196 is about 40536.7018391975. The cubic root of 1643224196 is about 1180.0460089309.

The spelling of 1643224196 in words is "one billion, six hundred forty-three million, two hundred twenty-four thousand, one hundred ninety-six".