16919006209 has 48 divisors (see below), whose sum is σ = 20959948800. Its totient is φ = 13578951456.

The previous prime is 16919006207. The next prime is 16919006231. The reversal of 16919006209 is 90260091961.

It is not a de Polignac number, because 16919006209 - 2¹ = 16919006207 is a prime.

It is a super-2 number, since 2×16919006209² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16919006207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47127972 + ... + 47128330.

It is an arithmetic number, because the mean of its divisors is an integer number (436665600).

Almost surely, 2^16919006209 is an apocalyptic number.

16919006209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16919006209 is a deficient number, since it is larger than the sum of its proper divisors (4040942591).

16919006209 is a wasteful number, since it uses less digits than its factorization.

16919006209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 16919006209 in words is "sixteen billion, nine hundred nineteen million, six thousand, two hundred nine".