173813489 has 2 divisors, whose sum is σ = 173813490. Its totient is φ = 173813488.

The previous prime is 173813459. The next prime is 173813503. The reversal of 173813489 is 984318371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96373489 + 77440000 = 9817^2 + 8800^2 .

It is an emirp because it is prime and its reverse (984318371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173813489 - 2¹² = 173809393 is a prime.

It is a super-2 number, since 2×173813489² = 60422257916706242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (173813459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86906744 + 86906745.

It is an arithmetic number, because the mean of its divisors is an integer number (86906745).

Almost surely, 2^173813489 is an apocalyptic number.

It is an amenable number.

173813489 is a deficient number, since it is larger than the sum of its proper divisors (1).

173813489 is an equidigital number, since it uses as much as digits as its factorization.

173813489 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 173813489 is about 13183.8343815447. The cubic root of 173813489 is about 558.0774730456.

The spelling of 173813489 in words is "one hundred seventy-three million, eight hundred thirteen thousand, four hundred eighty-nine".