165128346 has 12 divisors (see below), whose sum is σ = 357778122. Its totient is φ = 55042776.

The previous prime is 165128333. The next prime is 165128357. The reversal of 165128346 is 643821561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101304225 + 63824121 = 10065^2 + 7989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 165128346.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4586881 + ... + 4586916.

Almost surely, 2^165128346 is an apocalyptic number.

165128346 is an abundant number, since it is smaller than the sum of its proper divisors (192649776).

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

165128346 is a wasteful number, since it uses less digits than its factorization.

165128346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173805 (or 9173802 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 165128346 is about 12850.2274688038. The cubic root of 165128346 is about 548.6228311092.

The spelling of 165128346 in words is "one hundred sixty-five million, one hundred twenty-eight thousand, three hundred forty-six".