165280459 has 2 divisors, whose sum is σ = 165280460. Its totient is φ = 165280458.

The previous prime is 165280457. The next prime is 165280463. The reversal of 165280459 is 954082561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165280459 - 2¹ = 165280457 is a prime.

Together with 165280457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (165280457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82640229 + 82640230.

It is an arithmetic number, because the mean of its divisors is an integer number (82640230).

Almost surely, 2^165280459 is an apocalyptic number.

165280459 is a deficient number, since it is larger than the sum of its proper divisors (1).

165280459 is an equidigital number, since it uses as much as digits as its factorization.

165280459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 165280459 is about 12856.1447953887. The cubic root of 165280459 is about 548.7912396125.

The spelling of 165280459 in words is "one hundred sixty-five million, two hundred eighty thousand, four hundred fifty-nine".