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894874001684881 = 2338907565290647

894874001684881 has 4 divisors (see below), whose sum is σ = 933781566975552. Its totient is φ = 855966436394212.

The previous prime is 894874001684833. The next prime is 894874001684947. The reversal of 894874001684881 is 188486100478498.

It is a happy number.

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 894874001684881 - 27 = 894874001684753 is a prime.

It is a super-2 number, since 2×8948740016848812 (a number of 31 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 894874001684798 and 894874001684807.

It is not an unprimeable number, because it can be changed into a prime (894874001684081) 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, 19453782645301 + ... + 19453782645346.

It is an arithmetic number, because the mean of its divisors is an integer number (233445391743888).

Almost surely, 2894874001684881 is an apocalyptic number.

It is an amenable number.

894874001684881 is a deficient number, since it is larger than the sum of its proper divisors (38907565290671).

894874001684881 is a wasteful number, since it uses less digits than its factorization.

894874001684881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38907565290670.

The product of its (nonzero) digits is 792723456, while the sum is 76.

The spelling of 894874001684881 in words is "eight hundred ninety-four trillion, eight hundred seventy-four billion, one million, six hundred eighty-four thousand, eight hundred eighty-one".

Divisors: 1 23 38907565290647 894874001684881