16389730887 has 16 divisors (see below), whose sum is σ = 22021117440. Its totient is φ = 10842494400.

The previous prime is 16389730859. The next prime is 16389730897. The reversal of 16389730887 is 78803798361.

It is not a de Polignac number, because 16389730887 - 2¹⁴ = 16389714503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16389730887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389730807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942562 + ... + 959792.

It is an arithmetic number, because the mean of its divisors is an integer number (1376319840).

Almost surely, 2^16389730887 is an apocalyptic number.

16389730887 is a deficient number, since it is larger than the sum of its proper divisors (5631386553).

16389730887 is a wasteful number, since it uses less digits than its factorization.

16389730887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19654.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 16389730887 in words is "sixteen billion, three hundred eighty-nine million, seven hundred thirty thousand, eight hundred eighty-seven".