891630823422 has 16 divisors (see below), whose sum is σ = 1888159390992. Its totient is φ = 279727317120.

The previous prime is 891630823333. The next prime is 891630823423. The reversal of 891630823422 is 224328036198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891630823423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370739229 + ... + 4370739432.

It is an arithmetic number, because the mean of its divisors is an integer number (118009961937).

Almost surely, 2^891630823422 is an apocalyptic number.

891630823422 is an abundant number, since it is smaller than the sum of its proper divisors (996528567570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891630823422 is a wasteful number, since it uses less digits than its factorization.

891630823422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8741478683.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 891630823422 in words is "eight hundred ninety-one billion, six hundred thirty million, eight hundred twenty-three thousand, four hundred twenty-two".