165738143 has 2 divisors, whose sum is σ = 165738144. Its totient is φ = 165738142.

The previous prime is 165738137. The next prime is 165738169. The reversal of 165738143 is 341837561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165738143 - 2⁴ = 165738127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165738097 and 165738106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165738193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82869071 + 82869072.

It is an arithmetic number, because the mean of its divisors is an integer number (82869072).

Almost surely, 2^165738143 is an apocalyptic number.

165738143 is a deficient number, since it is larger than the sum of its proper divisors (1).

165738143 is an equidigital number, since it uses as much as digits as its factorization.

165738143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 165738143 is about 12873.9326936255. The cubic root of 165738143 is about 549.2973318698.

The spelling of 165738143 in words is "one hundred sixty-five million, seven hundred thirty-eight thousand, one hundred forty-three".