194671481 has 2 divisors, whose sum is σ = 194671482. Its totient is φ = 194671480.

The previous prime is 194671469. The next prime is 194671483. The reversal of 194671481 is 184176491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188815081 + 5856400 = 13741^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 194671481 - 2⁶ = 194671417 is a prime.

It is a super-2 number, since 2×194671481² = 75793971029466722, which contains 22 as substring.

Together with 194671483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194671483) 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, 97335740 + 97335741.

It is an arithmetic number, because the mean of its divisors is an integer number (97335741).

Almost surely, 2^194671481 is an apocalyptic number.

It is an amenable number.

194671481 is a deficient number, since it is larger than the sum of its proper divisors (1).

194671481 is an equidigital number, since it uses as much as digits as its factorization.

194671481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 194671481 is about 13952.4722182128. The cubic root of 194671481 is about 579.5631679078.

The spelling of 194671481 in words is "one hundred ninety-four million, six hundred seventy-one thousand, four hundred eighty-one".