189626973201121 has 3 divisors (see below), whose sum is σ = 189626986971633. Its totient is φ = 189626959430610.

The previous prime is 189626973201119. The next prime is 189626973201161. The reversal of 189626973201121 is 121102379626981.

The square root of 189626973201121 is 13770511.

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

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 is not a de Polignac number, because 189626973201121 - 2¹ = 189626973201119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189626973201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6885256 + ... + 20655766.

It is an arithmetic number, because the mean of its divisors is an integer number (63208995657211).

Almost surely, 2^{189626973201121} is an apocalyptic number.

189626973201121 is the 13770511-st square number.

189626973201121 is the 6885256-th centered octagonal number.

It is an amenable number.

189626973201121 is a deficient number, since it is larger than the sum of its proper divisors (13770512).

189626973201121 is an frugal number, since it uses more digits than its factorization.

189626973201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27541022 (or 13770511 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 189626973201121 in words is "one hundred eighty-nine trillion, six hundred twenty-six billion, nine hundred seventy-three million, two hundred one thousand, one hundred twenty-one".