173391493 has 12 divisors (see below), whose sum is σ = 195912288. Its totient is φ = 152185040.

The previous prime is 173391487. The next prime is 173391557. The reversal of 173391493 is 394193371.

It is not a de Polignac number, because 173391493 - 2⁹ = 173390981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173391193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121 + ... + 18622.

It is an arithmetic number, because the mean of its divisors is an integer number (16326024).

Almost surely, 2^173391493 is an apocalyptic number.

It is an amenable number.

173391493 is a deficient number, since it is larger than the sum of its proper divisors (22520795).

173391493 is a wasteful number, since it uses less digits than its factorization.

173391493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18812 (or 18783 counting only the distinct ones).

The product of its digits is 61236, while the sum is 40.

The square root of 173391493 is about 13167.8203587382. The cubic root of 173391493 is about 557.6254611161.

The spelling of 173391493 in words is "one hundred seventy-three million, three hundred ninety-one thousand, four hundred ninety-three".