1191088608 has 96 divisors (see below), whose sum is σ = 3245153184. Its totient is φ = 382205952.

The previous prime is 1191088607. The next prime is 1191088621. The reversal of 1191088608 is 8068801911.

1191088608 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1191088608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191088607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342816 + ... + 346272.

It is an arithmetic number, because the mean of its divisors is an integer number (33803679).

Almost surely, 2^1191088608 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 1191088608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622576592).

1191088608 is an abundant number, since it is smaller than the sum of its proper divisors (2054064576).

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

1191088608 is a wasteful number, since it uses less digits than its factorization.

1191088608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604 (or 3596 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 1191088608 is about 34512.1515991107. The cubic root of 1191088608 is about 1060.0215398495.

The spelling of 1191088608 in words is "one billion, one hundred ninety-one million, eighty-eight thousand, six hundred eight".