181956941 has 2 divisors, whose sum is σ = 181956942. Its totient is φ = 181956940.

The previous prime is 181956937. The next prime is 181956959. The reversal of 181956941 is 149659181.

181956941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149352841 + 32604100 = 12221^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 181956941 - 2² = 181956937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181956892 and 181956901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181956911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90978470 + 90978471.

It is an arithmetic number, because the mean of its divisors is an integer number (90978471).

Almost surely, 2^181956941 is an apocalyptic number.

It is an amenable number.

181956941 is a deficient number, since it is larger than the sum of its proper divisors (1).

181956941 is an equidigital number, since it uses as much as digits as its factorization.

181956941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 44.

The square root of 181956941 is about 13489.1415961135. The cubic root of 181956941 is about 566.6604154251.

The spelling of 181956941 in words is "one hundred eighty-one million, nine hundred fifty-six thousand, nine hundred forty-one".