16981908 has 24 divisors (see below), whose sum is σ = 39913440. Its totient is φ = 5619360.

The previous prime is 16981903. The next prime is 16981931. The reversal of 16981908 is 80918961.

It is a self number, because there is not a number n which added to its sum of digits gives 16981908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16981903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3423 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (1663060).

Almost surely, 2^16981908 is an apocalyptic number.

It is an amenable number.

16981908 is an abundant number, since it is smaller than the sum of its proper divisors (22931532).

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

16981908 is a wasteful number, since it uses less digits than its factorization.

16981908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10327 (or 10325 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 16981908 is about 4120.9110643158. The cubic root of 16981908 is about 257.0369117346.

The spelling of 16981908 in words is "sixteen million, nine hundred eighty-one thousand, nine hundred eight".