165040410 has 64 divisors (see below), whose sum is σ = 421210368. Its totient is φ = 41293824.

The previous prime is 165040391. The next prime is 165040411. The reversal of 165040410 is 14040561.

It is not an unprimeable number, because it can be changed into a prime (165040411) 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 31 ways as a sum of consecutive naturals, for example, 34314 + ... + 38826.

It is an arithmetic number, because the mean of its divisors is an integer number (6581412).

Almost surely, 2^165040410 is an apocalyptic number.

165040410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165040410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210605184).

165040410 is an abundant number, since it is smaller than the sum of its proper divisors (256169958).

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

165040410 is a wasteful number, since it uses less digits than its factorization.

165040410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 165040410 is about 12846.8054394857. The cubic root of 165040410 is about 548.5254275546.

Adding to 165040410 its reverse (14040561), we get a palindrome (179080971).

The spelling of 165040410 in words is "one hundred sixty-five million, forty thousand, four hundred ten".