165954941 has 2 divisors, whose sum is σ = 165954942. Its totient is φ = 165954940.

The previous prime is 165954937. The next prime is 165954961. The reversal of 165954941 is 149459561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87703225 + 78251716 = 9365^2 + 8846^2 .

It is an emirp because it is prime and its reverse (149459561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165954941 - 2² = 165954937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165954892 and 165954901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165954961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82977470 + 82977471.

It is an arithmetic number, because the mean of its divisors is an integer number (82977471).

Almost surely, 2^165954941 is an apocalyptic number.

It is an amenable number.

165954941 is a deficient number, since it is larger than the sum of its proper divisors (1).

165954941 is an equidigital number, since it uses as much as digits as its factorization.

165954941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 165954941 is about 12882.3499797203. The cubic root of 165954941 is about 549.5367349703.

The spelling of 165954941 in words is "one hundred sixty-five million, nine hundred fifty-four thousand, nine hundred forty-one".