194427061 has 2 divisors, whose sum is σ = 194427062. Its totient is φ = 194427060.

The previous prime is 194427059. The next prime is 194427151. The reversal of 194427061 is 160724491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 938961 = 13910^2 + 969^2 .

It is a cyclic number.

It is not a de Polignac number, because 194427061 - 2¹ = 194427059 is a prime.

Together with 194427059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194427661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97213530 + 97213531.

It is an arithmetic number, because the mean of its divisors is an integer number (97213531).

Almost surely, 2^194427061 is an apocalyptic number.

It is an amenable number.

194427061 is a deficient number, since it is larger than the sum of its proper divisors (1).

194427061 is an equidigital number, since it uses as much as digits as its factorization.

194427061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 194427061 is about 13943.7104459322. The cubic root of 194427061 is about 579.3205092572.

The spelling of 194427061 in words is "one hundred ninety-four million, four hundred twenty-seven thousand, sixty-one".