193372147081 has 9 divisors (see below), whose sum is σ = 197113275541. Its totient is φ = 189700749472.

The previous prime is 193372147061. The next prime is 193372147093. The reversal of 193372147081 is 180741273391.

The square root of 193372147081 is 439741.

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

It can be written as a sum of positive squares in 4 ways, for example, as 123581074681 + 69791072400 = 351541^2 + 264180^2 .

It is not a de Polignac number, because 193372147081 - 2¹¹ = 193372145033 is a prime.

It is a super-2 number, since 2×193372147081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193372147021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23302125 + ... + 23310421.

Almost surely, 2^193372147081 is an apocalyptic number.

193372147081 is the 439741-st square number.

193372147081 is the 219871-st centered octagonal number.

It is an amenable number.

193372147081 is a deficient number, since it is larger than the sum of its proper divisors (3741128460).

193372147081 is an frugal number, since it uses more digits than its factorization.

193372147081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16700 (or 8350 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 193372147081 in words is "one hundred ninety-three billion, three hundred seventy-two million, one hundred forty-seven thousand, eighty-one".