1191532992 has 112 divisors (see below), whose sum is σ = 3594945312. Its totient is φ = 345047040.

The previous prime is 1191532981. The next prime is 1191532999. The reversal of 1191532992 is 2992351911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191532999) 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, 28392 + ... + 56472.

It is an arithmetic number, because the mean of its divisors is an integer number (32097726).

Almost surely, 2^1191532992 is an apocalyptic number.

1191532992 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 1191532992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797472656).

1191532992 is an abundant number, since it is smaller than the sum of its proper divisors (2403412320).

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

1191532992 is a wasteful number, since it uses less digits than its factorization.

1191532992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28126 (or 28116 counting only the distinct ones).

The product of its digits is 43740, while the sum is 42.

The square root of 1191532992 is about 34518.5890789296. The cubic root of 1191532992 is about 1060.1533514932.

The spelling of 1191532992 in words is "one billion, one hundred ninety-one million, five hundred thirty-two thousand, nine hundred ninety-two".