173981946 has 16 divisors (see below), whose sum is σ = 348552000. Its totient is φ = 57895968.

The previous prime is 173981923. The next prime is 173981947. The reversal of 173981946 is 649189371.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 173981895 and 173981904.

It is not an unprimeable number, because it can be changed into a prime (173981947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20611 + ... + 27798.

It is an arithmetic number, because the mean of its divisors is an integer number (21784500).

Almost surely, 2^173981946 is an apocalyptic number.

173981946 is an abundant number, since it is smaller than the sum of its proper divisors (174570054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173981946 is a wasteful number, since it uses less digits than its factorization.

173981946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49013.

The product of its digits is 326592, while the sum is 48.

The square root of 173981946 is about 13190.2216054166. The cubic root of 173981946 is about 558.2577078136.

The spelling of 173981946 in words is "one hundred seventy-three million, nine hundred eighty-one thousand, nine hundred forty-six".