194255797 has 2 divisors, whose sum is σ = 194255798. Its totient is φ = 194255796.

The previous prime is 194255783. The next prime is 194255813. The reversal of 194255797 is 797552491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127441521 + 66814276 = 11289^2 + 8174^2 .

It is a cyclic number.

It is not a de Polignac number, because 194255797 - 2²³ = 185867189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194255797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194255197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97127898 + 97127899.

It is an arithmetic number, because the mean of its divisors is an integer number (97127899).

Almost surely, 2^194255797 is an apocalyptic number.

It is an amenable number.

194255797 is a deficient number, since it is larger than the sum of its proper divisors (1).

194255797 is an equidigital number, since it uses as much as digits as its factorization.

194255797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 49.

The square root of 194255797 is about 13937.5678294314. The cubic root of 194255797 is about 579.1503582271.

The spelling of 194255797 in words is "one hundred ninety-four million, two hundred fifty-five thousand, seven hundred ninety-seven".