194037607009 has 3 divisors (see below), whose sum is σ = 194038047507. Its totient is φ = 194037166512.

The previous prime is 194037606979. The next prime is 194037607037. The reversal of 194037607009 is 900706730491.

The square root of 194037607009 is 440497.

It is a perfect power (a square), and thus also a powerful number.

194037607009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2655856225 + 191381750784 = 51535^2 + 437472^2 .

It is not a de Polignac number, because 194037607009 - 2¹⁷ = 194037475937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194037607009.

It is not an unprimeable number, because it can be changed into a prime (194037607409) 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 2 ways as a sum of consecutive naturals, for example, 220249 + ... + 660745.

It is an arithmetic number, because the mean of its divisors is an integer number (64679349169).

Almost surely, 2^194037607009 is an apocalyptic number.

194037607009 is the 440497-th square number.

194037607009 is the 220249-th centered octagonal number.

It is an amenable number.

194037607009 is a deficient number, since it is larger than the sum of its proper divisors (440498).

194037607009 is an frugal number, since it uses more digits than its factorization.

194037607009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880994 (or 440497 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 194037607009 in words is "one hundred ninety-four billion, thirty-seven million, six hundred seven thousand, nine".