1868688336 has 20 divisors (see below), whose sum is σ = 4827444992. Its totient is φ = 622896096.

The previous prime is 1868688301. The next prime is 1868688379. The reversal of 1868688336 is 6338868681.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

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, 19465456 + ... + 19465551.

Almost surely, 2^1868688336 is an apocalyptic number.

1868688336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1868688336 is an abundant number, since it is smaller than the sum of its proper divisors (2958756656).

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

1868688336 is a wasteful number, since it uses less digits than its factorization.

1868688336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38931018 (or 38931012 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 57.

The square root of 1868688336 is about 43228.3279343534. The cubic root of 1868688336 is about 1231.7208459838.

The spelling of 1868688336 in words is "one billion, eight hundred sixty-eight million, six hundred eighty-eight thousand, three hundred thirty-six".