173834981 has 2 divisors, whose sum is σ = 173834982. Its totient is φ = 173834980.

The previous prime is 173834893. The next prime is 173834993. The reversal of 173834981 is 189438371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129732100 + 44102881 = 11390^2 + 6641^2 .

It is an emirp because it is prime and its reverse (189438371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173834981 - 2¹⁴ = 173818597 is a prime.

It is a super-2 number, since 2×173834981² = 60437201238540722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173834581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86917490 + 86917491.

It is an arithmetic number, because the mean of its divisors is an integer number (86917491).

Almost surely, 2^173834981 is an apocalyptic number.

It is an amenable number.

173834981 is a deficient number, since it is larger than the sum of its proper divisors (1).

173834981 is an equidigital number, since it uses as much as digits as its factorization.

173834981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 173834981 is about 13184.6494454726. The cubic root of 173834981 is about 558.1004741502.

The spelling of 173834981 in words is "one hundred seventy-three million, eight hundred thirty-four thousand, nine hundred eighty-one".