1091884248 has 384 divisors, whose sum is σ = 3931200000. Its totient is φ = 271289088.

The previous prime is 1091884247. The next prime is 1091884253. The reversal of 1091884248 is 8424881901.

It is a super-2 number, since 2×1091884248² = 2384422422061051008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091884247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6099823 + ... + 6100001.

It is an arithmetic number, because the mean of its divisors is an integer number (10237500).

Almost surely, 2^1091884248 is an apocalyptic number.

1091884248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091884248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600000).

1091884248 is an abundant number, since it is smaller than the sum of its proper divisors (2839315752).

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

1091884248 is a wasteful number, since it uses less digits than its factorization.

1091884248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 223 counting only the distinct ones).

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

The square root of 1091884248 is about 33043.6718298678. The cubic root of 1091884248 is about 1029.7351403692.

The spelling of 1091884248 in words is "one billion, ninety-one million, eight hundred eighty-four thousand, two hundred forty-eight".