193829748121 has 3 divisors (see below), whose sum is σ = 193830188383. Its totient is φ = 193829307860.

The previous prime is 193829748107. The next prime is 193829748137. The reversal of 193829748121 is 121847928391.

The square root of 193829748121 is 440261.

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

193829748121 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., 174547648521 + 19282099600 = 417789^2 + 138860^2 .

It is not a de Polignac number, because 193829748121 - 2¹⁷ = 193829617049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193829748421) 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, 220131 + ... + 660391.

Almost surely, 2^193829748121 is an apocalyptic number.

193829748121 is the 440261-st square number.

193829748121 is the 220131-st centered octagonal number.

It is an amenable number.

193829748121 is a deficient number, since it is larger than the sum of its proper divisors (440262).

193829748121 is an frugal number, since it uses more digits than its factorization.

193829748121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880522 (or 440261 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 55.

The spelling of 193829748121 in words is "one hundred ninety-three billion, eight hundred twenty-nine million, seven hundred forty-eight thousand, one hundred twenty-one".