894854809957 has 2 divisors, whose sum is σ = 894854809958. Its totient is φ = 894854809956.

The previous prime is 894854809951. The next prime is 894854810089. The reversal of 894854809957 is 759908458498.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 828101820001 + 66752989956 = 910001^2 + 258366^2 .

It is a cyclic number.

It is not a de Polignac number, because 894854809957 - 2³¹ = 892707326309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894854809951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447427404978 + 447427404979.

It is an arithmetic number, because the mean of its divisors is an integer number (447427404979).

Almost surely, 2^894854809957 is an apocalyptic number.

It is an amenable number.

894854809957 is a deficient number, since it is larger than the sum of its proper divisors (1).

894854809957 is an equidigital number, since it uses as much as digits as its factorization.

894854809957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1045094400, while the sum is 76.

The spelling of 894854809957 in words is "eight hundred ninety-four billion, eight hundred fifty-four million, eight hundred nine thousand, nine hundred fifty-seven".