894854809993 has 4 divisors (see below), whose sum is σ = 916680537108. Its totient is φ = 873029082880.

The previous prime is 894854809957. The next prime is 894854810089. The reversal of 894854809993 is 399908458498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217143884169 + 677710925824 = 465987^2 + 823232^2 .

It is a cyclic number.

It is not a de Polignac number, because 894854809993 - 2³³ = 886264875401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (894854809493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10912863496 + ... + 10912863577.

It is an arithmetic number, because the mean of its divisors is an integer number (229170134277).

Almost surely, 2^894854809993 is an apocalyptic number.

It is an amenable number.

894854809993 is a deficient number, since it is larger than the sum of its proper divisors (21825727115).

894854809993 is a wasteful number, since it uses less digits than its factorization.

894854809993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21825727114.

The product of its (nonzero) digits is 806215680, while the sum is 76.

The spelling of 894854809993 in words is "eight hundred ninety-four billion, eight hundred fifty-four million, eight hundred nine thousand, nine hundred ninety-three".