1191056448 has 112 divisors (see below), whose sum is σ = 3452042880. Its totient is φ = 360751104.

The previous prime is 1191056429. The next prime is 1191056467. The reversal of 1191056448 is 8446501911.

It is an interprime number because it is at equal distance from previous prime (1191056429) and next prime (1191056467).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88365 + ... + 100947.

Almost surely, 2^1191056448 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 1191056448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726021440).

1191056448 is an abundant number, since it is smaller than the sum of its proper divisors (2260986432).

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

1191056448 is a wasteful number, since it uses less digits than its factorization.

1191056448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12644 (or 12634 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1191056448 is about 34511.6856731166. The cubic root of 1191056448 is about 1060.0119993895.

The spelling of 1191056448 in words is "one billion, one hundred ninety-one million, fifty-six thousand, four hundred forty-eight".