1894287868 has 12 divisors (see below), whose sum is σ = 3616367832. Its totient is φ = 861039920.

The previous prime is 1894287841. The next prime is 1894287869. The reversal of 1894287868 is 8687824981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894287869) 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, 21525955 + ... + 21526042.

It is an arithmetic number, because the mean of its divisors is an integer number (301363986).

Almost surely, 2^1894287868 is an apocalyptic number.

It is an amenable number.

1894287868 is a deficient number, since it is larger than the sum of its proper divisors (1722079964).

1894287868 is a wasteful number, since it uses less digits than its factorization.

1894287868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43052012 (or 43052010 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 61.

The square root of 1894287868 is about 43523.4174669223. The cubic root of 1894287868 is about 1237.3198851964.

The spelling of 1894287868 in words is "one billion, eight hundred ninety-four million, two hundred eighty-seven thousand, eight hundred sixty-eight".