194181061 has 2 divisors, whose sum is σ = 194181062. Its totient is φ = 194181060.

The previous prime is 194181011. The next prime is 194181101. The reversal of 194181061 is 160181491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194044900 + 136161 = 13930^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 194181061 - 2⁷ = 194180933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194181011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97090530 + 97090531.

It is an arithmetic number, because the mean of its divisors is an integer number (97090531).

Almost surely, 2^194181061 is an apocalyptic number.

It is an amenable number.

194181061 is a deficient number, since it is larger than the sum of its proper divisors (1).

194181061 is an equidigital number, since it uses as much as digits as its factorization.

194181061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 194181061 is about 13934.8864724475. The cubic root of 194181061 is about 579.0760765603.

The spelling of 194181061 in words is "one hundred ninety-four million, one hundred eighty-one thousand, sixty-one".