165399468 has 24 divisors (see below), whose sum is σ = 415619568. Its totient is φ = 50892096.

The previous prime is 165399461. The next prime is 165399491. The reversal of 165399468 is 864993561.

It is a self number, because there is not a number n which added to its sum of digits gives 165399468.

It is not an unprimeable number, because it can be changed into a prime (165399461) 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, 529971 + ... + 530282.

It is an arithmetic number, because the mean of its divisors is an integer number (17317482).

Almost surely, 2^165399468 is an apocalyptic number.

It is an amenable number.

165399468 is an abundant number, since it is smaller than the sum of its proper divisors (250220100).

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

165399468 is a wasteful number, since it uses less digits than its factorization.

165399468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060273 (or 1060271 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 165399468 is about 12860.7724495848. The cubic root of 165399468 is about 548.9229257330.

The spelling of 165399468 in words is "one hundred sixty-five million, three hundred ninety-nine thousand, four hundred sixty-eight".