165338887 has 18 divisors (see below), whose sum is σ = 195043968. Its totient is φ = 139740552.

The previous prime is 165338857. The next prime is 165338891. The reversal of 165338887 is 788833561.

It is not a de Polignac number, because 165338887 - 2⁷ = 165338759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 165338887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165338857) 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 17 ways as a sum of consecutive naturals, for example, 1014268 + ... + 1014430.

It is an arithmetic number, because the mean of its divisors is an integer number (10835776).

Almost surely, 2^165338887 is an apocalyptic number.

165338887 is a deficient number, since it is larger than the sum of its proper divisors (29705081).

165338887 is an equidigital number, since it uses as much as digits as its factorization.

165338887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 297 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 165338887 is about 12858.4169709961. The cubic root of 165338887 is about 548.8558993977.

The spelling of 165338887 in words is "one hundred sixty-five million, three hundred thirty-eight thousand, eight hundred eighty-seven".