165649283 has 2 divisors, whose sum is σ = 165649284. Its totient is φ = 165649282.

The previous prime is 165649273. The next prime is 165649313. The reversal of 165649283 is 382946561.

It is a weak prime.

It is an emirp because it is prime and its reverse (382946561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165649283 - 2²⁶ = 98540419 is a prime.

It is not a weakly prime, because it can be changed into another prime (165649273) 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, 82824641 + 82824642.

It is an arithmetic number, because the mean of its divisors is an integer number (82824642).

Almost surely, 2^165649283 is an apocalyptic number.

165649283 is a deficient number, since it is larger than the sum of its proper divisors (1).

165649283 is an equidigital number, since it uses as much as digits as its factorization.

165649283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 165649283 is about 12870.4810710400. The cubic root of 165649283 is about 549.1991462905.

The spelling of 165649283 in words is "one hundred sixty-five million, six hundred forty-nine thousand, two hundred eighty-three".