165028863 has 4 divisors (see below), whose sum is σ = 220038488. Its totient is φ = 110019240.

The previous prime is 165028819. The next prime is 165028907. The reversal of 165028863 is 368820561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368820561 = 3 ⋅122940187.

It is an interprime number because it is at equal distance from previous prime (165028819) and next prime (165028907).

It is not a de Polignac number, because 165028863 - 2¹⁷ = 164897791 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 (165028063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27504808 + ... + 27504813.

It is an arithmetic number, because the mean of its divisors is an integer number (55009622).

Almost surely, 2^165028863 is an apocalyptic number.

165028863 is a deficient number, since it is larger than the sum of its proper divisors (55009625).

165028863 is an equidigital number, since it uses as much as digits as its factorization.

165028863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55009624.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 165028863 is about 12846.3560202884. The cubic root of 165028863 is about 548.5126347870.

The spelling of 165028863 in words is "one hundred sixty-five million, twenty-eight thousand, eight hundred sixty-three".