849136061 has 2 divisors, whose sum is σ = 849136062. Its totient is φ = 849136060.

The previous prime is 849136039. The next prime is 849136081. The reversal of 849136061 is 160631948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835556836 + 13579225 = 28906^2 + 3685^2 .

It is a cyclic number.

It is not a de Polignac number, because 849136061 - 2¹⁰ = 849135037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (849136031) 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, 424568030 + 424568031.

It is an arithmetic number, because the mean of its divisors is an integer number (424568031).

Almost surely, 2^849136061 is an apocalyptic number.

It is an amenable number.

849136061 is a deficient number, since it is larger than the sum of its proper divisors (1).

849136061 is an equidigital number, since it uses as much as digits as its factorization.

849136061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 849136061 is about 29139.9392758461. The cubic root of 849136061 is about 946.9471942848.

The spelling of 849136061 in words is "eight hundred forty-nine million, one hundred thirty-six thousand, sixty-one".