190741897 has 2 divisors, whose sum is σ = 190741898. Its totient is φ = 190741896.

The previous prime is 190741883. The next prime is 190741907. The reversal of 190741897 is 798147091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 35390601 = 12464^2 + 5949^2 .

It is a cyclic number.

It is not a de Polignac number, because 190741897 - 2⁷ = 190741769 is a prime.

It is not a weakly prime, because it can be changed into another prime (190741807) 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, 95370948 + 95370949.

It is an arithmetic number, because the mean of its divisors is an integer number (95370949).

Almost surely, 2^190741897 is an apocalyptic number.

It is an amenable number.

190741897 is a deficient number, since it is larger than the sum of its proper divisors (1).

190741897 is an equidigital number, since it uses as much as digits as its factorization.

190741897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 190741897 is about 13810.9339655217. The cubic root of 190741897 is about 575.6369973996.

The spelling of 190741897 in words is "one hundred ninety million, seven hundred forty-one thousand, eight hundred ninety-seven".