1894434806 has 12 divisors (see below), whose sum is σ = 3123469356. Its totient is φ = 861106620.

The previous prime is 1894434791. The next prime is 1894434853. The reversal of 1894434806 is 6084344981.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3913880 + ... + 3914363.

It is an arithmetic number, because the mean of its divisors is an integer number (260289113).

Almost surely, 2^1894434806 is an apocalyptic number.

1894434806 is a deficient number, since it is larger than the sum of its proper divisors (1229034550).

1894434806 is a wasteful number, since it uses less digits than its factorization.

1894434806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828267 (or 7828256 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 1894434806 is about 43525.1054679940. The cubic root of 1894434806 is about 1237.3518769213.

The spelling of 1894434806 in words is "one billion, eight hundred ninety-four million, four hundred thirty-four thousand, eight hundred six".