1118021792 has 12 divisors (see below), whose sum is σ = 2201105466. Its totient is φ = 559010880.

The previous prime is 1118021771. The next prime is 1118021797. The reversal of 1118021792 is 2971208111.

It can be written as a sum of positive squares in only one way, i.e., 1117966096 + 55696 = 33436^2 + 236^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 34938181 = 1118021792 / (1 + 1 + 1 + 8 + 0 + 2 + 1 + 7 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (1118021797) by changing a digit.

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 as a sum of consecutive naturals, namely, 17469059 + ... + 17469122.

Almost surely, 2^1118021792 is an apocalyptic number.

It is an amenable number.

1118021792 is a deficient number, since it is larger than the sum of its proper divisors (1083083674).

1118021792 is an equidigital number, since it uses as much as digits as its factorization.

1118021792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34938191 (or 34938183 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 32.

The square root of 1118021792 is about 33436.8328643728. The cubic root of 1118021792 is about 1037.8870413893.

The spelling of 1118021792 in words is "one billion, one hundred eighteen million, twenty-one thousand, seven hundred ninety-two".