1168868538 has 12 divisors (see below), whose sum is σ = 2532548538. Its totient is φ = 389622840.

The previous prime is 1168868531. The next prime is 1168868551. The reversal of 1168868538 is 8358688611.

It can be written as a sum of positive squares in only one way, i.e., 622851849 + 546016689 = 24957^2 + 23367^2 .

It is not an unprimeable number, because it can be changed into a prime (1168868531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32468553 + ... + 32468588.

Almost surely, 2^1168868538 is an apocalyptic number.

1168868538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1168868538 is an abundant number, since it is smaller than the sum of its proper divisors (1363680000).

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

1168868538 is a wasteful number, since it uses less digits than its factorization.

1168868538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64937149 (or 64937146 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 1168868538 is about 34188.7194553993. The cubic root of 1168868538 is about 1053.3884601238.

The spelling of 1168868538 in words is "one billion, one hundred sixty-eight million, eight hundred sixty-eight thousand, five hundred thirty-eight".