1994185434 has 8 divisors (see below), whose sum is σ = 3988370880. Its totient is φ = 664728476.

The previous prime is 1994185421. The next prime is 1994185439. The reversal of 1994185434 is 4345814991.

It is a happy number.

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

1994185434 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1994185439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166182114 + ... + 166182125.

It is an arithmetic number, because the mean of its divisors is an integer number (498546360).

Almost surely, 2^1994185434 is an apocalyptic number.

1994185434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1994185434 is a wasteful number, since it uses less digits than its factorization.

1994185434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332364244.

The product of its digits is 622080, while the sum is 48.

The square root of 1994185434 is about 44656.3034072459. The cubic root of 1994185434 is about 1258.6988823831.

The spelling of 1994185434 in words is "one billion, nine hundred ninety-four million, one hundred eighty-five thousand, four hundred thirty-four".