16938577389 has 16 divisors (see below), whose sum is σ = 22663344704. Its totient is φ = 11253168000.

The previous prime is 16938577339. The next prime is 16938577427. The reversal of 16938577389 is 98377583961.

It is not a de Polignac number, because 16938577389 - 2¹¹ = 16938575341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16938577339) 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, 1021287 + ... + 1037739.

It is an arithmetic number, because the mean of its divisors is an integer number (1416459044).

Almost surely, 2^16938577389 is an apocalyptic number.

It is an amenable number.

16938577389 is a deficient number, since it is larger than the sum of its proper divisors (5724767315).

16938577389 is a wasteful number, since it uses less digits than its factorization.

16938577389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17628.

The product of its digits is 68584320, while the sum is 66.

The spelling of 16938577389 in words is "sixteen billion, nine hundred thirty-eight million, five hundred seventy-seven thousand, three hundred eighty-nine".