165090263 has 16 divisors (see below), whose sum is σ = 183884736. Its totient is φ = 147225600.

The previous prime is 165090241. The next prime is 165090269. The reversal of 165090263 is 362090561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165090263 - 2¹⁴ = 165073879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165090269) 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 in 15 ways as a sum of consecutive naturals, for example, 71495 + ... + 73767.

It is an arithmetic number, because the mean of its divisors is an integer number (11492796).

Almost surely, 2^165090263 is an apocalyptic number.

165090263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

165090263 is a deficient number, since it is larger than the sum of its proper divisors (18794473).

165090263 is a wasteful number, since it uses less digits than its factorization.

165090263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 165090263 is about 12848.7455807950. The cubic root of 165090263 is about 548.5806521816.

The spelling of 165090263 in words is "one hundred sixty-five million, ninety thousand, two hundred sixty-three".