894627691873 has 2 divisors, whose sum is σ = 894627691874. Its totient is φ = 894627691872.

The previous prime is 894627691823. The next prime is 894627691883. The reversal of 894627691873 is 378196726498.

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., 743487134049 + 151140557824 = 862257^2 + 388768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894627691873 is a prime.

It is a super-2 number, since 2×894627691873² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (894627691813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447313845936 + 447313845937.

It is an arithmetic number, because the mean of its divisors is an integer number (447313845937).

Almost surely, 2^894627691873 is an apocalyptic number.

It is an amenable number.

894627691873 is a deficient number, since it is larger than the sum of its proper divisors (1).

894627691873 is an equidigital number, since it uses as much as digits as its factorization.

894627691873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 219469824, while the sum is 70.

The spelling of 894627691873 in words is "eight hundred ninety-four billion, six hundred twenty-seven million, six hundred ninety-one thousand, eight hundred seventy-three".