1868898168 has 24 divisors (see below), whose sum is σ = 5061599400. Its totient is φ = 622966032.

The previous prime is 1868898167. The next prime is 1868898193. The reversal of 1868898168 is 8618988681.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868898167) 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, 12978388 + ... + 12978531.

It is an arithmetic number, because the mean of its divisors is an integer number (210899975).

Almost surely, 2^1868898168 is an apocalyptic number.

1868898168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1868898168 is an abundant number, since it is smaller than the sum of its proper divisors (3192701232).

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

1868898168 is a wasteful number, since it uses less digits than its factorization.

1868898168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25956931 (or 25956924 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 63.

The square root of 1868898168 is about 43230.7548858449. The cubic root of 1868898168 is about 1231.7669469076.

The spelling of 1868898168 in words is "one billion, eight hundred sixty-eight million, eight hundred ninety-eight thousand, one hundred sixty-eight".