1868313789 has 32 divisors (see below), whose sum is σ = 2854414080. Its totient is φ = 1207008000.

The previous prime is 1868313773. The next prime is 1868313791. The reversal of 1868313789 is 9873138681.

It is not a de Polignac number, because 1868313789 - 2⁴ = 1868313773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868313709) 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 31 ways as a sum of consecutive naturals, for example, 161569 + ... + 172745.

It is an arithmetic number, because the mean of its divisors is an integer number (89200440).

Almost surely, 2^1868313789 is an apocalyptic number.

It is an amenable number.

1868313789 is a deficient number, since it is larger than the sum of its proper divisors (986100291).

1868313789 is a wasteful number, since it uses less digits than its factorization.

1868313789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378 (or 11372 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1868313789 is about 43223.9955233201. The cubic root of 1868313789 is about 1231.6385479418.

The spelling of 1868313789 in words is "one billion, eight hundred sixty-eight million, three hundred thirteen thousand, seven hundred eighty-nine".