1994163798 has 32 divisors (see below), whose sum is σ = 4366996992. Its totient is φ = 602056800.

The previous prime is 1994163793. The next prime is 1994163811. The reversal of 1994163798 is 8973614991.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994163793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37861 + ... + 73632.

It is an arithmetic number, because the mean of its divisors is an integer number (136468656).

Almost surely, 2^1994163798 is an apocalyptic number.

1994163798 is an abundant number, since it is smaller than the sum of its proper divisors (2372833194).

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

1994163798 is a wasteful number, since it uses less digits than its factorization.

1994163798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111780.

The product of its digits is 2939328, while the sum is 57.

The square root of 1994163798 is about 44656.0611563537. The cubic root of 1994163798 is about 1258.6943302642.

The spelling of 1994163798 in words is "one billion, nine hundred ninety-four million, one hundred sixty-three thousand, seven hundred ninety-eight".