1191998592 has 192 divisors, whose sum is σ = 3746215200. Its totient is φ = 376233984.

The previous prime is 1191998581. The next prime is 1191998609. The reversal of 1191998592 is 2958991911.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 589968 + ... + 591984.

Almost surely, 2^1191998592 is an apocalyptic number.

1191998592 is a gapful number since it is divisible by the number (12) 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 1191998592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873107600).

1191998592 is an abundant number, since it is smaller than the sum of its proper divisors (2554216608).

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

1191998592 is an equidigital number, since it uses as much as digits as its factorization.

1191998592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065 (or 2041 counting only the distinct ones).

The product of its digits is 524880, while the sum is 54.

The square root of 1191998592 is about 34525.3326124456. The cubic root of 1191998592 is about 1060.2914210009.

The spelling of 1191998592 in words is "one billion, one hundred ninety-one million, nine hundred ninety-eight thousand, five hundred ninety-two".