165263363 has 4 divisors (see below), whose sum is σ = 167591088. Its totient is φ = 162935640.

The previous prime is 165263359. The next prime is 165263369. The reversal of 165263363 is 363362561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165263363 - 2² = 165263359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165263369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163756 + ... + 1163897.

It is an arithmetic number, because the mean of its divisors is an integer number (41897772).

Almost surely, 2^165263363 is an apocalyptic number.

165263363 is a deficient number, since it is larger than the sum of its proper divisors (2327725).

165263363 is an equidigital number, since it uses as much as digits as its factorization.

165263363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327724.

The product of its digits is 58320, while the sum is 35.

The square root of 165263363 is about 12855.4798821359. The cubic root of 165263363 is about 548.7723173140.

The spelling of 165263363 in words is "one hundred sixty-five million, two hundred sixty-three thousand, three hundred sixty-three".