165016443 has 4 divisors (see below), whose sum is σ = 220021928. Its totient is φ = 110010960.

The previous prime is 165016429. The next prime is 165016447. The reversal of 165016443 is 344610561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 165016443 - 2¹⁰ = 165015419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165016443.

It is not an unprimeable number, because it can be changed into a prime (165016447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27502738 + ... + 27502743.

It is an arithmetic number, because the mean of its divisors is an integer number (55005482).

Almost surely, 2^165016443 is an apocalyptic number.

165016443 is a deficient number, since it is larger than the sum of its proper divisors (55005485).

165016443 is an equidigital number, since it uses as much as digits as its factorization.

165016443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55005484.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 165016443 is about 12845.8726056271. The cubic root of 165016443 is about 548.4988741682.

The spelling of 165016443 in words is "one hundred sixty-five million, sixteen thousand, four hundred forty-three".