1894234812 has 24 divisors (see below), whose sum is σ = 4423372800. Its totient is φ = 630912816.

The previous prime is 1894234801. The next prime is 1894234817. The reversal of 1894234812 is 2184324981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894234817) 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, 46362 + ... + 77057.

It is an arithmetic number, because the mean of its divisors is an integer number (184307200).

Almost surely, 2^1894234812 is an apocalyptic number.

1894234812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1894234812 is an abundant number, since it is smaller than the sum of its proper divisors (2529137988).

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

1894234812 is a wasteful number, since it uses less digits than its factorization.

1894234812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124705 (or 124703 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 1894234812 is about 43522.8079516936. The cubic root of 1894234812 is about 1237.3083332991.

The spelling of 1894234812 in words is "one billion, eight hundred ninety-four million, two hundred thirty-four thousand, eight hundred twelve".