894509250857 has 4 divisors (see below), whose sum is σ = 933400957440. Its totient is φ = 855617544276.

The previous prime is 894509250851. The next prime is 894509250967. The reversal of 894509250857 is 758052905498.

894509250857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 894509250857 - 2²² = 894505056553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 894509250857.

It is not an unprimeable number, because it can be changed into a prime (894509250851) 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, 19445853257 + ... + 19445853302.

It is an arithmetic number, because the mean of its divisors is an integer number (233350239360).

Almost surely, 2^894509250857 is an apocalyptic number.

It is an amenable number.

894509250857 is a deficient number, since it is larger than the sum of its proper divisors (38891706583).

894509250857 is a wasteful number, since it uses less digits than its factorization.

894509250857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38891706582.

The product of its (nonzero) digits is 36288000, while the sum is 62.

The spelling of 894509250857 in words is "eight hundred ninety-four billion, five hundred nine million, two hundred fifty thousand, eight hundred fifty-seven".