165782043 has 18 divisors (see below), whose sum is σ = 278559684. Its totient is φ = 94732344.

The previous prime is 165782041. The next prime is 165782047. The reversal of 165782043 is 340287561.

It is not a de Polignac number, because 165782043 - 2¹ = 165782041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165781989 and 165782007.

It is not an unprimeable number, because it can be changed into a prime (165782041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 187521 + ... + 188402.

It is an arithmetic number, because the mean of its divisors is an integer number (15475538).

Almost surely, 2^165782043 is an apocalyptic number.

165782043 is a deficient number, since it is larger than the sum of its proper divisors (112777641).

165782043 is a wasteful number, since it uses less digits than its factorization.

165782043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375943 (or 375933 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 165782043 is about 12875.6375764465. The cubic root of 165782043 is about 549.3458260861.

The spelling of 165782043 in words is "one hundred sixty-five million, seven hundred eighty-two thousand, forty-three".