165324493 has 2 divisors, whose sum is σ = 165324494. Its totient is φ = 165324492.

The previous prime is 165324479. The next prime is 165324517. The reversal of 165324493 is 394423561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161722089 + 3602404 = 12717^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 165324493 - 2⁵ = 165324461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165324433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82662246 + 82662247.

It is an arithmetic number, because the mean of its divisors is an integer number (82662247).

Almost surely, 2^165324493 is an apocalyptic number.

It is an amenable number.

165324493 is a deficient number, since it is larger than the sum of its proper divisors (1).

165324493 is an equidigital number, since it uses as much as digits as its factorization.

165324493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 165324493 is about 12857.8572476132. The cubic root of 165324493 is about 548.8399715837.

It can be divided in two parts, 16532 and 4493, that added together give a square (21025 = 145²).

The spelling of 165324493 in words is "one hundred sixty-five million, three hundred twenty-four thousand, four hundred ninety-three".