165358946 has 16 divisors (see below), whose sum is σ = 253190880. Its totient is φ = 80972640.

The previous prime is 165358933. The next prime is 165358961. The reversal of 165358946 is 649853561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 165358946.

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, 30665 + ... + 35651.

It is an arithmetic number, because the mean of its divisors is an integer number (15824430).

Almost surely, 2^165358946 is an apocalyptic number.

165358946 is a deficient number, since it is larger than the sum of its proper divisors (87831934).

165358946 is a wasteful number, since it uses less digits than its factorization.

165358946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329.

The product of its digits is 777600, while the sum is 47.

The square root of 165358946 is about 12859.1969422667. The cubic root of 165358946 is about 548.8780943281.

The spelling of 165358946 in words is "one hundred sixty-five million, three hundred fifty-eight thousand, nine hundred forty-six".