868166053 has 2 divisors, whose sum is σ = 868166054. Its totient is φ = 868166052.

The previous prime is 868166051. The next prime is 868166071. The reversal of 868166053 is 350661868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 656230689 + 211935364 = 25617^2 + 14558^2 .

It is a cyclic number.

It is not a de Polignac number, because 868166053 - 2¹ = 868166051 is a prime.

Together with 868166051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868166051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434083026 + 434083027.

It is an arithmetic number, because the mean of its divisors is an integer number (434083027).

Almost surely, 2^868166053 is an apocalyptic number.

It is an amenable number.

868166053 is a deficient number, since it is larger than the sum of its proper divisors (1).

868166053 is an equidigital number, since it uses as much as digits as its factorization.

868166053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 868166053 is about 29464.6576935827. The cubic root of 868166053 is about 953.9690099033.

The spelling of 868166053 in words is "eight hundred sixty-eight million, one hundred sixty-six thousand, fifty-three".