165215130 has 16 divisors (see below), whose sum is σ = 396516384. Its totient is φ = 44057360.

The previous prime is 165215119. The next prime is 165215161. The reversal of 165215130 is 31512561.

It is a self number, because there is not a number n which added to its sum of digits gives 165215130.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2753556 + ... + 2753615.

It is an arithmetic number, because the mean of its divisors is an integer number (24782274).

Almost surely, 2^165215130 is an apocalyptic number.

165215130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165215130 is an abundant number, since it is smaller than the sum of its proper divisors (231301254).

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

165215130 is a wasteful number, since it uses less digits than its factorization.

165215130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507181.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 165215130 is about 12853.6037748174. The cubic root of 165215130 is about 548.7189247368.

Adding to 165215130 its reverse (31512561), we get a palindrome (196727691).

The spelling of 165215130 in words is "one hundred sixty-five million, two hundred fifteen thousand, one hundred thirty".