16348961818 has 12 divisors (see below), whose sum is σ = 28527270282. Its totient is φ = 7006697880.

The previous prime is 16348961803. The next prime is 16348961843. The reversal of 16348961818 is 81816984361.

It can be written as a sum of positive squares in only one way, i.e., 9211584529 + 7137377289 = 95977^2 + 84483^2 .

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 5 ways as a sum of consecutive naturals, for example, 83412973 + ... + 83413168.

Almost surely, 2^16348961818 is an apocalyptic number.

16348961818 is a deficient number, since it is larger than the sum of its proper divisors (12178308464).

16348961818 is a wasteful number, since it uses less digits than its factorization.

16348961818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166826157 (or 166826150 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 55.

The spelling of 16348961818 in words is "sixteen billion, three hundred forty-eight million, nine hundred sixty-one thousand, eight hundred eighteen".