165279847 has 2 divisors, whose sum is σ = 165279848. Its totient is φ = 165279846.

The previous prime is 165279823. The next prime is 165279857. The reversal of 165279847 is 748972561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165279847 - 2¹⁵ = 165247079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165279847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165279857) 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, 82639923 + 82639924.

It is an arithmetic number, because the mean of its divisors is an integer number (82639924).

Almost surely, 2^165279847 is an apocalyptic number.

165279847 is a deficient number, since it is larger than the sum of its proper divisors (1).

165279847 is an equidigital number, since it uses as much as digits as its factorization.

165279847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 49.

The square root of 165279847 is about 12856.1209935190. The cubic root of 165279847 is about 548.7905622575.

The spelling of 165279847 in words is "one hundred sixty-five million, two hundred seventy-nine thousand, eight hundred forty-seven".