16486349905 has 8 divisors (see below), whose sum is σ = 19792821672. Its totient is φ = 13182945408.

The previous prime is 16486349897. The next prime is 16486349911. The reversal of 16486349905 is 50994368461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45212176 + 16441137729 = 6724^2 + 128223^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16486349905 - 2³ = 16486349897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754974 + ... + 776503.

It is an arithmetic number, because the mean of its divisors is an integer number (2474102709).

Almost surely, 2^16486349905 is an apocalyptic number.

It is an amenable number.

16486349905 is a deficient number, since it is larger than the sum of its proper divisors (3306471767).

16486349905 is a wasteful number, since it uses less digits than its factorization.

16486349905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533635.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 16486349905 in words is "sixteen billion, four hundred eighty-six million, three hundred forty-nine thousand, nine hundred five".