190435897 has 2 divisors, whose sum is σ = 190435898. Its totient is φ = 190435896.

The previous prime is 190435859. The next prime is 190435907. The reversal of 190435897 is 798534091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189778176 + 657721 = 13776^2 + 811^2 .

It is a cyclic number.

It is not a de Polignac number, because 190435897 - 2⁷ = 190435769 is a prime.

It is not a weakly prime, because it can be changed into another prime (190435807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95217948 + 95217949.

It is an arithmetic number, because the mean of its divisors is an integer number (95217949).

Almost surely, 2^190435897 is an apocalyptic number.

It is an amenable number.

190435897 is a deficient number, since it is larger than the sum of its proper divisors (1).

190435897 is an equidigital number, since it uses as much as digits as its factorization.

190435897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 190435897 is about 13799.8513397790. The cubic root of 190435897 is about 575.3290084326.

The spelling of 190435897 in words is "one hundred ninety million, four hundred thirty-five thousand, eight hundred ninety-seven".