1994135200 has 72 divisors (see below), whose sum is σ = 4875625440. Its totient is φ = 796435200.

The previous prime is 1994135183. The next prime is 1994135203. The reversal of 1994135200 is 25314991.

It is not an unprimeable number, because it can be changed into a prime (1994135203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669715 + ... + 672685.

It is an arithmetic number, because the mean of its divisors is an integer number (67717020).

Almost surely, 2^1994135200 is an apocalyptic number.

1994135200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994135200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437812720).

1994135200 is an abundant number, since it is smaller than the sum of its proper divisors (2881490240).

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

1994135200 is a wasteful number, since it uses less digits than its factorization.

1994135200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1994135200 is about 44655.7409523121. The cubic root of 1994135200 is about 1258.6883133207.

The spelling of 1994135200 in words is "one billion, nine hundred ninety-four million, one hundred thirty-five thousand, two hundred".