165867043 has 2 divisors, whose sum is σ = 165867044. Its totient is φ = 165867042.

The previous prime is 165866989. The next prime is 165867047. The reversal of 165867043 is 340768561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165867043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165866987 and 165867005.

It is not a weakly prime, because it can be changed into another prime (165867047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82933521 + 82933522.

It is an arithmetic number, because the mean of its divisors is an integer number (82933522).

Almost surely, 2^165867043 is an apocalyptic number.

165867043 is a deficient number, since it is larger than the sum of its proper divisors (1).

165867043 is an equidigital number, since it uses as much as digits as its factorization.

165867043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 165867043 is about 12878.9379608724. The cubic root of 165867043 is about 549.4396971638.

The spelling of 165867043 in words is "one hundred sixty-five million, eight hundred sixty-seven thousand, forty-three".