16389782937 has 12 divisors (see below), whose sum is σ = 25826324784. Its totient is φ = 9933201720.

The previous prime is 16389782921. The next prime is 16389782939. The reversal of 16389782937 is 73928798361.

It is not a de Polignac number, because 16389782937 - 2⁴ = 16389782921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16389782939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82776583 + ... + 82776780.

It is an arithmetic number, because the mean of its divisors is an integer number (2152193732).

Almost surely, 2^16389782937 is an apocalyptic number.

It is an amenable number.

16389782937 is a deficient number, since it is larger than the sum of its proper divisors (9436541847).

16389782937 is a wasteful number, since it uses less digits than its factorization.

16389782937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165553380 (or 165553377 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 16389782937 in words is "sixteen billion, three hundred eighty-nine million, seven hundred eighty-two thousand, nine hundred thirty-seven".