91849086208 has 144 divisors (see below), whose sum is σ = 222919784640. Its totient is φ = 37225267200.

The previous prime is 91849086181. The next prime is 91849086211. The reversal of 91849086208 is 80268094819.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859078 + ... + 960058.

It is an arithmetic number, because the mean of its divisors is an integer number (1548054060).

Almost surely, 2^91849086208 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 91849086208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111459892320).

91849086208 is an abundant number, since it is smaller than the sum of its proper divisors (131070698432).

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

91849086208 is a wasteful number, since it uses less digits than its factorization.

91849086208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101044 (or 101030 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 91849086208 in words is "ninety-one billion, eight hundred forty-nine million, eighty-six thousand, two hundred eight".