2191408848 has 120 divisors (see below), whose sum is σ = 6356902656. Its totient is φ = 703987200.

The previous prime is 2191408837. The next prime is 2191408853. The reversal of 2191408848 is 8488041912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1253511 + ... + 1255257.

Almost surely, 2^2191408848 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 2191408848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3178451328).

2191408848 is an abundant number, since it is smaller than the sum of its proper divisors (4165493808).

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

2191408848 is a wasteful number, since it uses less digits than its factorization.

2191408848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 2191408848 is about 46812.4860267002. The cubic root of 2191408848 is about 1298.8962718546.

The spelling of 2191408848 in words is "two billion, one hundred ninety-one million, four hundred eight thousand, eight hundred forty-eight".