16138946434 has 16 divisors (see below), whose sum is σ = 26427740472. Its totient is φ = 7346706048.

The previous prime is 16138946407. The next prime is 16138946443. The reversal of 16138946434 is 43464983161.

16138946434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12752055625 + 3386890809 = 112925^2 + 58197^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4249669 + ... + 4253464.

Almost surely, 2^16138946434 is an apocalyptic number.

16138946434 is a deficient number, since it is larger than the sum of its proper divisors (10288794038).

16138946434 is a wasteful number, since it uses less digits than its factorization.

16138946434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503221.

The product of its digits is 1492992, while the sum is 49.

The spelling of 16138946434 in words is "sixteen billion, one hundred thirty-eight million, nine hundred forty-six thousand, four hundred thirty-four".