1868268388 has 12 divisors (see below), whose sum is σ = 3736536832. Its totient is φ = 800686440.

The previous prime is 1868268383. The next prime is 1868268427. The reversal of 1868268388 is 8838628681.

1868268388 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1868268383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33361908 + ... + 33361963.

Almost surely, 2^1868268388 is an apocalyptic number.

It is an amenable number.

1868268388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1868268388 is a wasteful number, since it uses less digits than its factorization.

1868268388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66723882 (or 66723880 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 58.

The square root of 1868268388 is about 43223.4703373063. The cubic root of 1868268388 is about 1231.6285713745.

The spelling of 1868268388 in words is "one billion, eight hundred sixty-eight million, two hundred sixty-eight thousand, three hundred eighty-eight".