190285897 has 2 divisors, whose sum is σ = 190285898. Its totient is φ = 190285896.

The previous prime is 190285891. The next prime is 190285903. The reversal of 190285897 is 798582091.

It is a balanced prime because it is at equal distance from previous prime (190285891) and next prime (190285903).

It can be written as a sum of positive squares in only one way, i.e., 138862656 + 51423241 = 11784^2 + 7171^2 .

It is a cyclic number.

It is not a de Polignac number, because 190285897 - 2³ = 190285889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190285897.

It is not a weakly prime, because it can be changed into another prime (190285891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95142948 + 95142949.

It is an arithmetic number, because the mean of its divisors is an integer number (95142949).

Almost surely, 2^190285897 is an apocalyptic number.

It is an amenable number.

190285897 is a deficient number, since it is larger than the sum of its proper divisors (1).

190285897 is an equidigital number, since it uses as much as digits as its factorization.

190285897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 190285897 is about 13794.4154279911. The cubic root of 190285897 is about 575.1779129355.

The spelling of 190285897 in words is "one hundred ninety million, two hundred eighty-five thousand, eight hundred ninety-seven".