173894838049 has 3 divisors (see below), whose sum is σ = 173895255057. Its totient is φ = 173894421042.

The previous prime is 173894838017. The next prime is 173894838127. The reversal of 173894838049 is 940838498371.

The square root of 173894838049 is 417007.

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, and also an emirpimes, since its reverse is a distinct semiprime: 940838498371 = 70381 ⋅13367791.

It is not a de Polignac number, because 173894838049 - 2⁵ = 173894838017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173894838449) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 208504 + ... + 625510.

It is an arithmetic number, because the mean of its divisors is an integer number (57965085019).

Almost surely, 2^173894838049 is an apocalyptic number.

173894838049 is the 417007-th square number.

173894838049 is the 208504-th centered octagonal number.

It is an amenable number.

173894838049 is a deficient number, since it is larger than the sum of its proper divisors (417008).

173894838049 is an frugal number, since it uses more digits than its factorization.

173894838049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834014 (or 417007 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

Multiplying 173894838049 by its sum of digits (64), we get a square (11129269635136 = 3336056²).

The spelling of 173894838049 in words is "one hundred seventy-three billion, eight hundred ninety-four million, eight hundred thirty-eight thousand, forty-nine".