194027497 has 2 divisors, whose sum is σ = 194027498. Its totient is φ = 194027496.

The previous prime is 194027437. The next prime is 194027501. The reversal of 194027497 is 794720491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125865961 + 68161536 = 11219^2 + 8256^2 .

It is an emirp because it is prime and its reverse (794720491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194027497 - 2⁷ = 194027369 is a prime.

It is not a weakly prime, because it can be changed into another prime (194027437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97013748 + 97013749.

It is an arithmetic number, because the mean of its divisors is an integer number (97013749).

Almost surely, 2^194027497 is an apocalyptic number.

It is an amenable number.

194027497 is a deficient number, since it is larger than the sum of its proper divisors (1).

194027497 is an equidigital number, since it uses as much as digits as its factorization.

194027497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 194027497 is about 13929.3753269843. The cubic root of 194027497 is about 578.9233862652.

The spelling of 194027497 in words is "one hundred ninety-four million, twenty-seven thousand, four hundred ninety-seven".