1081728196 has 6 divisors (see below), whose sum is σ = 1893024350. Its totient is φ = 540864096.

The previous prime is 1081728187. The next prime is 1081728209. The reversal of 1081728196 is 6918271801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 776736900 + 304991296 = 27870^2 + 17464^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135216021 + ... + 135216028.

Almost surely, 2^1081728196 is an apocalyptic number.

It is an amenable number.

1081728196 is a deficient number, since it is larger than the sum of its proper divisors (811296154).

1081728196 is a wasteful number, since it uses less digits than its factorization.

1081728196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270432053 (or 270432051 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 1081728196 is about 32889.6366048638. The cubic root of 1081728196 is about 1026.5325307319.

Adding to 1081728196 its reverse (6918271801), we get a palindrome (7999999997).

The spelling of 1081728196 in words is "one billion, eighty-one million, seven hundred twenty-eight thousand, one hundred ninety-six".