1994663552 has 64 divisors (see below), whose sum is σ = 4553361600. Its totient is φ = 852609024.

The previous prime is 1994663543. The next prime is 1994663579. The reversal of 1994663552 is 2553664991.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1994663552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363743 + ... + 369185.

It is an arithmetic number, because the mean of its divisors is an integer number (71146275).

Almost surely, 2^1994663552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994663552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2276680800).

1994663552 is an abundant number, since it is smaller than the sum of its proper divisors (2558698048).

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

1994663552 is an equidigital number, since it uses as much as digits as its factorization.

1994663552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5873 (or 5861 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 50.

The square root of 1994663552 is about 44661.6563956152. The cubic root of 1994663552 is about 1258.7994678975.

The spelling of 1994663552 in words is "one billion, nine hundred ninety-four million, six hundred sixty-three thousand, five hundred fifty-two".