190856849 has 2 divisors, whose sum is σ = 190856850. Its totient is φ = 190856848.

The previous prime is 190856839. The next prime is 190856857. The reversal of 190856849 is 948658091.

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., 137639824 + 53217025 = 11732^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 190856849 - 2²⁰ = 189808273 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 190856797 and 190856806.

It is not a weakly prime, because it can be changed into another prime (190856839) 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, 95428424 + 95428425.

It is an arithmetic number, because the mean of its divisors is an integer number (95428425).

Almost surely, 2^190856849 is an apocalyptic number.

It is an amenable number.

190856849 is a deficient number, since it is larger than the sum of its proper divisors (1).

190856849 is an equidigital number, since it uses as much as digits as its factorization.

190856849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 190856849 is about 13815.0949689099. The cubic root of 190856849 is about 575.7526114604.

The spelling of 190856849 in words is "one hundred ninety million, eight hundred fifty-six thousand, eight hundred forty-nine".