16949189868 has 24 divisors (see below), whose sum is σ = 42590272368. Its totient is φ = 5215135296.

The previous prime is 16949189863. The next prime is 16949189963. The reversal of 16949189868 is 86898194961.

It is not an unprimeable number, because it can be changed into a prime (16949189863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54324171 + ... + 54324482.

It is an arithmetic number, because the mean of its divisors is an integer number (1774594682).

Almost surely, 2^16949189868 is an apocalyptic number.

It is an amenable number.

16949189868 is an abundant number, since it is smaller than the sum of its proper divisors (25641082500).

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

16949189868 is a wasteful number, since it uses less digits than its factorization.

16949189868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108648673 (or 108648671 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 69.

The spelling of 16949189868 in words is "sixteen billion, nine hundred forty-nine million, one hundred eighty-nine thousand, eight hundred sixty-eight".