181033841 has 2 divisors, whose sum is σ = 181033842. Its totient is φ = 181033840.

The previous prime is 181033829. The next prime is 181033871. The reversal of 181033841 is 148330181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167314225 + 13719616 = 12935^2 + 3704^2 .

It is an emirp because it is prime and its reverse (148330181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 181033841 - 2¹⁴ = 181017457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (181033871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90516920 + 90516921.

It is an arithmetic number, because the mean of its divisors is an integer number (90516921).

Almost surely, 2^181033841 is an apocalyptic number.

It is an amenable number.

181033841 is a deficient number, since it is larger than the sum of its proper divisors (1).

181033841 is an equidigital number, since it uses as much as digits as its factorization.

181033841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 181033841 is about 13454.8816791527. The cubic root of 181033841 is about 565.7005339376.

The spelling of 181033841 in words is "one hundred eighty-one million, thirty-three thousand, eight hundred forty-one".