16905006389 has 16 divisors (see below), whose sum is σ = 17813295360. Its totient is φ = 16025399040.

The previous prime is 16905006383. The next prime is 16905006403. The reversal of 16905006389 is 98360050961.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16905006389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16905006383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236297 + ... + 299409.

It is an arithmetic number, because the mean of its divisors is an integer number (1113330960).

Almost surely, 2^16905006389 is an apocalyptic number.

It is an amenable number.

16905006389 is a deficient number, since it is larger than the sum of its proper divisors (908288971).

16905006389 is a wasteful number, since it uses less digits than its factorization.

16905006389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63340.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 16905006389 in words is "sixteen billion, nine hundred five million, six thousand, three hundred eighty-nine".