894118657 has 2 divisors, whose sum is σ = 894118658. Its totient is φ = 894118656.

The previous prime is 894118597. The next prime is 894118697. The reversal of 894118657 is 756811498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832668736 + 61449921 = 28856^2 + 7839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894118657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 894118657.

It is not a weakly prime, because it can be changed into another prime (894118697) 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, 447059328 + 447059329.

It is an arithmetic number, because the mean of its divisors is an integer number (447059329).

Almost surely, 2^894118657 is an apocalyptic number.

It is an amenable number.

894118657 is a deficient number, since it is larger than the sum of its proper divisors (1).

894118657 is an equidigital number, since it uses as much as digits as its factorization.

894118657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 894118657 is about 29901.8169514831. The cubic root of 894118657 is about 963.3816851992.

The spelling of 894118657 in words is "eight hundred ninety-four million, one hundred eighteen thousand, six hundred fifty-seven".