1191849472 has 80 divisors (see below), whose sum is σ = 2609190144. Its totient is φ = 539392000.

The previous prime is 1191849427. The next prime is 1191849473. The reversal of 1191849472 is 2749481911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191849473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427147 + ... + 2427637.

Almost surely, 2^1191849472 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 1191849472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304595072).

1191849472 is an abundant number, since it is smaller than the sum of its proper divisors (1417340672).

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

1191849472 is an equidigital number, since it uses as much as digits as its factorization.

1191849472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 935 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 1191849472 is about 34523.1729712088. The cubic root of 1191849472 is about 1060.2472047154.

The spelling of 1191849472 in words is "one billion, one hundred ninety-one million, eight hundred forty-nine thousand, four hundred seventy-two".