16194944433 has 4 divisors (see below), whose sum is σ = 21593259248. Its totient is φ = 10796629620.

The previous prime is 16194944429. The next prime is 16194944459. The reversal of 16194944433 is 33444949161.

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 not a de Polignac number, because 16194944433 - 2² = 16194944429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16194944533) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2699157403 + ... + 2699157408.

It is an arithmetic number, because the mean of its divisors is an integer number (5398314812).

Almost surely, 2^16194944433 is an apocalyptic number.

It is an amenable number.

16194944433 is a deficient number, since it is larger than the sum of its proper divisors (5398314815).

16194944433 is an equidigital number, since it uses as much as digits as its factorization.

16194944433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5398314814.

The product of its digits is 1119744, while the sum is 48.

The spelling of 16194944433 in words is "sixteen billion, one hundred ninety-four million, nine hundred forty-four thousand, four hundred thirty-three".