165380128 has 12 divisors (see below), whose sum is σ = 325592190. Its totient is φ = 82690048.

The previous prime is 165380081. The next prime is 165380179. The reversal of 165380128 is 821083561.

It can be written as a sum of positive squares in only one way, i.e., 85599504 + 79780624 = 9252^2 + 8932^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 165380093 and 165380102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2584033 + ... + 2584096.

Almost surely, 2^165380128 is an apocalyptic number.

It is an amenable number.

165380128 is a deficient number, since it is larger than the sum of its proper divisors (160212062).

165380128 is an equidigital number, since it uses as much as digits as its factorization.

165380128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168139 (or 5168131 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 165380128 is about 12860.0205287550. The cubic root of 165380128 is about 548.9015298899.

The spelling of 165380128 in words is "one hundred sixty-five million, three hundred eighty thousand, one hundred twenty-eight".