1868366687 has 6 divisors (see below), whose sum is σ = 2053659384. Its totient is φ = 1698515060.

The previous prime is 1868366663. The next prime is 1868366713. The reversal of 1868366687 is 7866638681.

It is not a de Polignac number, because 1868366687 - 2⁸ = 1868366431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868366627) 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 5 ways as a sum of consecutive naturals, for example, 7720403 + ... + 7720644.

It is an arithmetic number, because the mean of its divisors is an integer number (342276564).

Almost surely, 2^1868366687 is an apocalyptic number.

1868366687 is a deficient number, since it is larger than the sum of its proper divisors (185292697).

1868366687 is a wasteful number, since it uses less digits than its factorization.

1868366687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15441069 (or 15441058 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 59.

The square root of 1868366687 is about 43224.6074244752. The cubic root of 1868366687 is about 1231.6501717210.

The spelling of 1868366687 in words is "one billion, eight hundred sixty-eight million, three hundred sixty-six thousand, six hundred eighty-seven".