849166361 has 2 divisors, whose sum is σ = 849166362. Its totient is φ = 849166360.

The previous prime is 849166321. The next prime is 849166363. The reversal of 849166361 is 163661948.

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., 554838025 + 294328336 = 23555^2 + 17156^2 .

It is a cyclic number.

It is not a de Polignac number, because 849166361 - 2¹⁰ = 849165337 is a prime.

Together with 849166363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849166363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424583180 + 424583181.

It is an arithmetic number, because the mean of its divisors is an integer number (424583181).

Almost surely, 2^849166361 is an apocalyptic number.

It is an amenable number.

849166361 is a deficient number, since it is larger than the sum of its proper divisors (1).

849166361 is an equidigital number, since it uses as much as digits as its factorization.

849166361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 849166361 is about 29140.4591762038. The cubic root of 849166361 is about 946.9584575598.

The spelling of 849166361 in words is "eight hundred forty-nine million, one hundred sixty-six thousand, three hundred sixty-one".