1994135199 has 8 divisors (see below), whose sum is σ = 3038682240. Its totient is φ = 1139505816.

The previous prime is 1994135183. The next prime is 1994135203. The reversal of 1994135199 is 9915314991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1994135199 - 2⁴ = 1994135183 is a prime.

It is a super-4 number, since 4×1994135199⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994135119) 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 7 ways as a sum of consecutive naturals, for example, 47479389 + ... + 47479430.

It is an arithmetic number, because the mean of its divisors is an integer number (379835280).

Almost surely, 2^1994135199 is an apocalyptic number.

1994135199 is a deficient number, since it is larger than the sum of its proper divisors (1044547041).

1994135199 is an equidigital number, since it uses as much as digits as its factorization.

1994135199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94958829.

The product of its digits is 393660, while the sum is 51.

The square root of 1994135199 is about 44655.7409411153. The cubic root of 1994135199 is about 1258.6883131103.

The spelling of 1994135199 in words is "one billion, nine hundred ninety-four million, one hundred thirty-five thousand, one hundred ninety-nine".