16004794549 has 4 divisors (see below), whose sum is σ = 16011402336. Its totient is φ = 15998186764.

The previous prime is 16004794523. The next prime is 16004794591. The reversal of 16004794549 is 94549740061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16004794549 is a prime.

It is a super-2 number, since 2×16004794549² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004794249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3300259 + ... + 3305104.

It is an arithmetic number, because the mean of its divisors is an integer number (4002850584).

Almost surely, 2^16004794549 is an apocalyptic number.

It is an amenable number.

16004794549 is a deficient number, since it is larger than the sum of its proper divisors (6607787).

16004794549 is an equidigital number, since it uses as much as digits as its factorization.

16004794549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6607786.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 16004794549 in words is "sixteen billion, four million, seven hundred ninety-four thousand, five hundred forty-nine".