165486943 has 2 divisors, whose sum is σ = 165486944. Its totient is φ = 165486942.

The previous prime is 165486931. The next prime is 165486967. The reversal of 165486943 is 349684561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165486943 - 2⁵ = 165486911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165486893 and 165486902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165486913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82743471 + 82743472.

It is an arithmetic number, because the mean of its divisors is an integer number (82743472).

Almost surely, 2^165486943 is an apocalyptic number.

165486943 is a deficient number, since it is larger than the sum of its proper divisors (1).

165486943 is an equidigital number, since it uses as much as digits as its factorization.

165486943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 46.

The square root of 165486943 is about 12864.1728455428. The cubic root of 165486943 is about 549.0196785038.

The spelling of 165486943 in words is "one hundred sixty-five million, four hundred eighty-six thousand, nine hundred forty-three".