165959898 has 16 divisors (see below), whose sum is σ = 357452256. Its totient is φ = 51064560.

The previous prime is 165959897. The next prime is 165959909. The reversal of 165959898 is 898959561.

165959898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165959897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063768 + ... + 1063923.

It is an arithmetic number, because the mean of its divisors is an integer number (22340766).

Almost surely, 2^165959898 is an apocalyptic number.

165959898 is an abundant number, since it is smaller than the sum of its proper divisors (191492358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165959898 is a wasteful number, since it uses less digits than its factorization.

165959898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127709.

The product of its digits is 6998400, while the sum is 60.

The square root of 165959898 is about 12882.5423733050. The cubic root of 165959898 is about 549.5422063881.

The spelling of 165959898 in words is "one hundred sixty-five million, nine hundred fifty-nine thousand, eight hundred ninety-eight".