165422815 has 8 divisors (see below), whose sum is σ = 205352640. Its totient is φ = 127774752.

The previous prime is 165422813. The next prime is 165422821. The reversal of 165422815 is 518224561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165422815 - 2¹ = 165422813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165422813) 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 7 ways as a sum of consecutive naturals, for example, 570279 + ... + 570568.

It is an arithmetic number, because the mean of its divisors is an integer number (25669080).

Almost surely, 2^165422815 is an apocalyptic number.

165422815 is a deficient number, since it is larger than the sum of its proper divisors (39929825).

165422815 is a wasteful number, since it uses less digits than its factorization.

165422815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140881.

The product of its digits is 19200, while the sum is 34.

The square root of 165422815 is about 12861.6801002046. The cubic root of 165422815 is about 548.9487522985.

The spelling of 165422815 in words is "one hundred sixty-five million, four hundred twenty-two thousand, eight hundred fifteen".