165349904 has 10 divisors (see below), whose sum is σ = 320365470. Its totient is φ = 82674944.

The previous prime is 165349889. The next prime is 165349907. The reversal of 165349904 is 409943561.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 18939904 = 12100^2 + 4352^2 .

It is not an unprimeable number, because it can be changed into a prime (165349907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5167169 + ... + 5167200.

It is an arithmetic number, because the mean of its divisors is an integer number (32036547).

Almost surely, 2^165349904 is an apocalyptic number.

It is an amenable number.

165349904 is a deficient number, since it is larger than the sum of its proper divisors (155015566).

165349904 is a wasteful number, since it uses less digits than its factorization.

165349904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10334377 (or 10334371 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 165349904 is about 12858.8453602958. The cubic root of 165349904 is about 548.8680897365.

The spelling of 165349904 in words is "one hundred sixty-five million, three hundred forty-nine thousand, nine hundred four".