165416443 has 8 divisors (see below), whose sum is σ = 176117760. Its totient is φ = 154823040.

The previous prime is 165416429. The next prime is 165416513. The reversal of 165416443 is 344614561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165416443 - 2²⁵ = 131862011 is a prime.

It is a super-2 number, since 2×165416443² = 54725199229544498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165416399 and 165416408.

It is not an unprimeable number, because it can be changed into a prime (165416143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23803 + ... + 29956.

It is an arithmetic number, because the mean of its divisors is an integer number (22014720).

Almost surely, 2^165416443 is an apocalyptic number.

165416443 is a deficient number, since it is larger than the sum of its proper divisors (10701317).

165416443 is a wasteful number, since it uses less digits than its factorization.

165416443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53957.

The product of its digits is 34560, while the sum is 34.

The square root of 165416443 is about 12861.4323852361. The cubic root of 165416443 is about 548.9417038021.

The spelling of 165416443 in words is "one hundred sixty-five million, four hundred sixteen thousand, four hundred forty-three".