169372493 has 8 divisors (see below), whose sum is σ = 170372280. Its totient is φ = 168376320.

The previous prime is 169372487. The next prime is 169372531. The reversal of 169372493 is 394273961.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 167624809 = 1322^2 + 12947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 169372493 - 2⁴ = 169372477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169372193) 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 in 7 ways as a sum of consecutive naturals, for example, 181853 + ... + 182781.

It is an arithmetic number, because the mean of its divisors is an integer number (21296535).

Almost surely, 2^169372493 is an apocalyptic number.

It is an amenable number.

169372493 is a deficient number, since it is larger than the sum of its proper divisors (999787).

169372493 is an equidigital number, since it uses as much as digits as its factorization.

169372493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its digits is 244944, while the sum is 44.

The square root of 169372493 is about 13014.3187681876. The cubic root of 169372493 is about 553.2833824928.

The spelling of 169372493 in words is "one hundred sixty-nine million, three hundred seventy-two thousand, four hundred ninety-three".