16981690319 has 8 divisors (see below), whose sum is σ = 18671351808. Its totient is φ = 15316340760.

The previous prime is 16981690289. The next prime is 16981690321. The reversal of 16981690319 is 91309618961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16981690319 is a prime.

It is a super-2 number, since 2×16981690319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16981690339) 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, 6076517 + ... + 6079310.

It is an arithmetic number, because the mean of its divisors is an integer number (2333918976).

Almost surely, 2^16981690319 is an apocalyptic number.

16981690319 is a deficient number, since it is larger than the sum of its proper divisors (1689661489).

16981690319 is a wasteful number, since it uses less digits than its factorization.

16981690319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155965.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 16981690319 in words is "sixteen billion, nine hundred eighty-one million, six hundred ninety thousand, three hundred nineteen".