1198971324 has 72 divisors (see below), whose sum is σ = 3176933760. Its totient is φ = 380536992.

The previous prime is 1198971317. The next prime is 1198971329. The reversal of 1198971324 is 4231798911.

It is a self number, because there is not a number n which added to its sum of digits gives 1198971324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198971329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184767 + ... + 191145.

It is an arithmetic number, because the mean of its divisors is an integer number (44124080).

Almost surely, 2^1198971324 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 1198971324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588466880).

1198971324 is an abundant number, since it is smaller than the sum of its proper divisors (1977962436).

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

1198971324 is a wasteful number, since it uses less digits than its factorization.

1198971324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639 (or 6634 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1198971324 is about 34626.1653089105. The cubic root of 1198971324 is about 1062.3548347742.

The spelling of 1198971324 in words is "one billion, one hundred ninety-eight million, nine hundred seventy-one thousand, three hundred twenty-four".