1994459085 has 16 divisors (see below), whose sum is σ = 3545705280. Its totient is φ = 1063711440.

The previous prime is 1994459009. The next prime is 1994459087. The reversal of 1994459085 is 5809544991.

1994459085 is a `hidden beast` number, since 1 + 9 + 9 + 44 + 590 + 8 + 5 = 666.

It is not a de Polignac number, because 1994459085 - 2⁷ = 1994458957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994459087) 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, 7386751 + ... + 7387020.

It is an arithmetic number, because the mean of its divisors is an integer number (221606580).

Almost surely, 2^1994459085 is an apocalyptic number.

1994459085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1994459085 is a deficient number, since it is larger than the sum of its proper divisors (1551246195).

1994459085 is a wasteful number, since it uses less digits than its factorization.

1994459085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14773785 (or 14773779 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The square root of 1994459085 is about 44659.3672704843. The cubic root of 1994459085 is about 1258.7564545038.

The spelling of 1994459085 in words is "one billion, nine hundred ninety-four million, four hundred fifty-nine thousand, eighty-five".