165409064 has 32 divisors (see below), whose sum is σ = 319994400. Its totient is φ = 80118720.

The previous prime is 165409051. The next prime is 165409073. The reversal of 165409064 is 460904561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30167 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (9999825).

Almost surely, 2^165409064 is an apocalyptic number.

It is an amenable number.

165409064 is a deficient number, since it is larger than the sum of its proper divisors (154585336).

165409064 is a wasteful number, since it uses less digits than its factorization.

165409064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193 (or 5189 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 165409064 is about 12861.1455166326. The cubic root of 165409064 is about 548.9335411693.

The spelling of 165409064 in words is "one hundred sixty-five million, four hundred nine thousand, sixty-four".