16868294884 has 27 divisors (see below), whose sum is σ = 34342730793. Its totient is φ = 7228489968.

The previous prime is 16868294881. The next prime is 16868294893. The reversal of 16868294884 is 48849286861.

It is a happy number.

The square root of 16868294884 is 129878.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13813300900 + 3054993984 = 117530^2 + 55272^2 .

It is not an unprimeable number, because it can be changed into a prime (16868294881) 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 8 ways as a sum of consecutive naturals, for example, 1813654 + ... + 1822930.

Almost surely, 2^16868294884 is an apocalyptic number.

16868294884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16868294884 is the 129878-th square number.

It is an amenable number.

16868294884 is an abundant number, since it is smaller than the sum of its proper divisors (17474435909).

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

16868294884 is an frugal number, since it uses more digits than its factorization.

16868294884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18572 (or 9286 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 64.

Multiplying 16868294884 by its sum of digits (64), we get a square (1079570872576 = 1039024²).

The spelling of 16868294884 in words is "sixteen billion, eight hundred sixty-eight million, two hundred ninety-four thousand, eight hundred eighty-four".