16422631738 has 4 divisors (see below), whose sum is σ = 24633947610. Its totient is φ = 8211315868.

The previous prime is 16422631733. The next prime is 16422631751. The reversal of 16422631738 is 83713622461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16109447929 + 313183809 = 126923^2 + 17697^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16422631694 and 16422631703.

It is not an unprimeable number, because it can be changed into a prime (16422631733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4105657933 + ... + 4105657936.

Almost surely, 2^16422631738 is an apocalyptic number.

16422631738 is a deficient number, since it is larger than the sum of its proper divisors (8211315872).

16422631738 is an equidigital number, since it uses as much as digits as its factorization.

16422631738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211315871.

The product of its digits is 290304, while the sum is 43.

The spelling of 16422631738 in words is "sixteen billion, four hundred twenty-two million, six hundred thirty-one thousand, seven hundred thirty-eight".