894124813 has 2 divisors, whose sum is σ = 894124814. Its totient is φ = 894124812.

The previous prime is 894124801. The next prime is 894124837. The reversal of 894124813 is 318421498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 643789129 + 250335684 = 25373^2 + 15822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894124813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894128813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447062406 + 447062407.

It is an arithmetic number, because the mean of its divisors is an integer number (447062407).

Almost surely, 2^894124813 is an apocalyptic number.

It is an amenable number.

894124813 is a deficient number, since it is larger than the sum of its proper divisors (1).

894124813 is an equidigital number, since it uses as much as digits as its factorization.

894124813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 40.

The square root of 894124813 is about 29901.9198881945. The cubic root of 894124813 is about 963.3838961526.

The spelling of 894124813 in words is "eight hundred ninety-four million, one hundred twenty-four thousand, eight hundred thirteen".