1091839848 has 64 divisors (see below), whose sum is σ = 2982251520. Its totient is φ = 330360000.

The previous prime is 1091839843. The next prime is 1091839867. The reversal of 1091839848 is 8489381901.

It is a Cunningham number, because it is equal to 33043²-1.

It is a super-2 number, since 2×1091839848² = 2384228507361326208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1091839848.

It is not an unprimeable number, because it can be changed into a prime (1091839843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195511 + ... + 201017.

It is an arithmetic number, because the mean of its divisors is an integer number (46597680).

Almost surely, 2^1091839848 is an apocalyptic number.

It is an amenable number.

1091839848 is an abundant number, since it is smaller than the sum of its proper divisors (1890411672).

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

1091839848 is a wasteful number, since it uses less digits than its factorization.

1091839848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278 (or 6274 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1091839848 is about 33042.9999848682. Note that the first 4 decimals coincide. The cubic root of 1091839848 is about 1029.7211825832.

The spelling of 1091839848 in words is "one billion, ninety-one million, eight hundred thirty-nine thousand, eight hundred forty-eight".