1126985772 has 54 divisors (see below), whose sum is σ = 2893708132. Its totient is φ = 341123200.

The previous prime is 1126985747. The next prime is 1126985801. The reversal of 1126985772 is 2775896211.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1278772 + ... + 1279652.

Almost surely, 2^1126985772 is an apocalyptic number.

1126985772 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 1126985772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446854066).

1126985772 is an abundant number, since it is smaller than the sum of its proper divisors (1766722360).

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

1126985772 is an equidigital number, since it uses as much as digits as its factorization.

1126985772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 897 counting only the distinct ones).

The product of its digits is 423360, while the sum is 48.

The square root of 1126985772 is about 33570.6087523000. The cubic root of 1126985772 is about 1040.6534884535.

Multiplying 1126985772 by its sum of digits (48), we get a square (54095317056 = 232584²).

The spelling of 1126985772 in words is "one billion, one hundred twenty-six million, nine hundred eighty-five thousand, seven hundred seventy-two".