165020741 has 2 divisors, whose sum is σ = 165020742. Its totient is φ = 165020740.

The previous prime is 165020623. The next prime is 165020767. The reversal of 165020741 is 147020561.

It is an a-pointer prime, because the next prime (165020767) can be obtained adding 165020741 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162664516 + 2356225 = 12754^2 + 1535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165020741 is a prime.

It is a Chen prime.

It is equal to p_9240056 and since 165020741 and 9240056 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165020741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165020771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82510370 + 82510371.

It is an arithmetic number, because the mean of its divisors is an integer number (82510371).

Almost surely, 2^165020741 is an apocalyptic number.

It is an amenable number.

165020741 is a deficient number, since it is larger than the sum of its proper divisors (1).

165020741 is an equidigital number, since it uses as much as digits as its factorization.

165020741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 165020741 is about 12846.0398956254. The cubic root of 165020741 is about 548.5036361738.

The spelling of 165020741 in words is "one hundred sixty-five million, twenty thousand, seven hundred forty-one".