1994429834 has 16 divisors (see below), whose sum is σ = 3190752648. Its totient is φ = 931702272.

The previous prime is 1994429809. The next prime is 1994429839. The reversal of 1994429834 is 4389244991.

It can be written as a sum of positive squares in 4 ways, for example, as 1962224209 + 32205625 = 44297^2 + 5675^2 .

It is not an unprimeable number, because it can be changed into a prime (1994429839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209429 + ... + 218744.

Almost surely, 2^1994429834 is an apocalyptic number.

1994429834 is a deficient number, since it is larger than the sum of its proper divisors (1196322814).

1994429834 is a wasteful number, since it uses less digits than its factorization.

1994429834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428329.

The product of its digits is 2239488, while the sum is 53.

The square root of 1994429834 is about 44659.0397791981. The cubic root of 1994429834 is about 1258.7503007776.

The spelling of 1994429834 in words is "one billion, nine hundred ninety-four million, four hundred twenty-nine thousand, eight hundred thirty-four".