16444427386 has 8 divisors (see below), whose sum is σ = 26117620020. Its totient is φ = 7738554048.

The previous prime is 16444427353. The next prime is 16444427449. The reversal of 16444427386 is 68372444461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15521422225 + 923005161 = 124585^2 + 30381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241829781 + ... + 241829848.

Almost surely, 2^16444427386 is an apocalyptic number.

16444427386 is a deficient number, since it is larger than the sum of its proper divisors (9673192634).

16444427386 is a wasteful number, since it uses less digits than its factorization.

16444427386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483659648.

The product of its digits is 3096576, while the sum is 49.

The spelling of 16444427386 in words is "sixteen billion, four hundred forty-four million, four hundred twenty-seven thousand, three hundred eighty-six".