165260385 has 48 divisors (see below), whose sum is σ = 310164480. Its totient is φ = 83475360.

The previous prime is 165260377. The next prime is 165260399. The reversal of 165260385 is 583062561.

165260385 is a `hidden beast` number, since 16 + 5 + 260 + 385 = 666.

165260385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165260385 - 2³ = 165260377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47040 + ... + 50430.

It is an arithmetic number, because the mean of its divisors is an integer number (6461760).

Almost surely, 2^165260385 is an apocalyptic number.

165260385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165260385 is a deficient number, since it is larger than the sum of its proper divisors (144904095).

165260385 is a wasteful number, since it uses less digits than its factorization.

165260385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443 (or 3418 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 165260385 is about 12855.3640555217. The cubic root of 165260385 is about 548.7690210525.

The spelling of 165260385 in words is "one hundred sixty-five million, two hundred sixty thousand, three hundred eighty-five".