16490881868 has 6 divisors (see below), whose sum is σ = 28859043276. Its totient is φ = 8245440932.

The previous prime is 16490881867. The next prime is 16490881879. The reversal of 16490881868 is 86818809461.

It is not an unprimeable number, because it can be changed into a prime (16490881867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061360230 + ... + 2061360237.

It is an arithmetic number, because the mean of its divisors is an integer number (4809840546).

Almost surely, 2^16490881868 is an apocalyptic number.

It is an amenable number.

16490881868 is a deficient number, since it is larger than the sum of its proper divisors (12368161408).

16490881868 is a wasteful number, since it uses less digits than its factorization.

16490881868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122720471 (or 4122720469 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 59.

The spelling of 16490881868 in words is "sixteen billion, four hundred ninety million, eight hundred eighty-one thousand, eight hundred sixty-eight".