1091851552 has 24 divisors (see below), whose sum is σ = 2345000112. Its totient is φ = 496296000.

The previous prime is 1091851543. The next prime is 1091851559. The reversal of 1091851552 is 2551581901.

It is not an unprimeable number, because it can be changed into a prime (1091851559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550574 + ... + 1551277.

It is an arithmetic number, because the mean of its divisors is an integer number (97708338).

Almost surely, 2^1091851552 is an apocalyptic number.

It is an amenable number.

1091851552 is an abundant number, since it is smaller than the sum of its proper divisors (1253148560).

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

1091851552 is a wasteful number, since it uses less digits than its factorization.

1091851552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101872 (or 3101864 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 37.

The square root of 1091851552 is about 33043.1770869570. The cubic root of 1091851552 is about 1029.7248619427.

The spelling of 1091851552 in words is "one billion, ninety-one million, eight hundred fifty-one thousand, five hundred fifty-two".