1819875868 has 12 divisors (see below), whose sum is σ = 3206158200. Its totient is φ = 903830672.

The previous prime is 1819875847. The next prime is 1819875877. The reversal of 1819875868 is 8685789181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526146 + ... + 1527337.

It is an arithmetic number, because the mean of its divisors is an integer number (267179850).

Almost surely, 2^1819875868 is an apocalyptic number.

It is an amenable number.

1819875868 is a deficient number, since it is larger than the sum of its proper divisors (1386282332).

1819875868 is a wasteful number, since it uses less digits than its factorization.

1819875868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053636 (or 3053634 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 61.

The square root of 1819875868 is about 42660.0031411157. The cubic root of 1819875868 is about 1220.9013915375.

The spelling of 1819875868 in words is "one billion, eight hundred nineteen million, eight hundred seventy-five thousand, eight hundred sixty-eight".