891449598048 has 192 divisors, whose sum is σ = 2548371248640. Its totient is φ = 271998476288.

The previous prime is 891449597993. The next prime is 891449598113. The reversal of 891449598048 is 840895944198.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7174015 + ... + 7297217.

It is an arithmetic number, because the mean of its divisors is an integer number (13272766920).

Almost surely, 2^891449598048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 891449598048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274185624320).

891449598048 is an abundant number, since it is smaller than the sum of its proper divisors (1656921650592).

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

891449598048 is a wasteful number, since it uses less digits than its factorization.

891449598048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123381 (or 123373 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 69.

The spelling of 891449598048 in words is "eight hundred ninety-one billion, four hundred forty-nine million, five hundred ninety-eight thousand, forty-eight".