16649101892 has 24 divisors (see below), whose sum is σ = 29211165144. Its totient is φ = 8303081472.

The previous prime is 16649101891. The next prime is 16649101919. The reversal of 16649101892 is 29810194661.

It can be written as a sum of positive squares in 4 ways, for example, as 807355396 + 15841746496 = 28414^2 + 125864^2 .

It is not an unprimeable number, because it can be changed into a prime (16649101891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3683618 + ... + 3688134.

It is an arithmetic number, because the mean of its divisors is an integer number (1217131881).

Almost surely, 2^16649101892 is an apocalyptic number.

It is an amenable number.

16649101892 is a deficient number, since it is larger than the sum of its proper divisors (12562063252).

16649101892 is a wasteful number, since it uses less digits than its factorization.

16649101892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 6693 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 16649101892 in words is "sixteen billion, six hundred forty-nine million, one hundred one thousand, eight hundred ninety-two".