9101081992 has 8 divisors (see below), whose sum is σ = 17064528750. Its totient is φ = 4550540992.

The previous prime is 9101081981. The next prime is 9101082013. The reversal of 9101081992 is 2991801019.

It can be written as a sum of positive squares in only one way, i.e., 7674811236 + 1426270756 = 87606^2 + 37766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 568817617 + ... + 568817632.

Almost surely, 2^9101081992 is an apocalyptic number.

It is an amenable number.

9101081992 is a deficient number, since it is larger than the sum of its proper divisors (7963446758).

9101081992 is a wasteful number, since it uses less digits than its factorization.

9101081992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137635255 (or 1137635251 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 40.

The square root of 9101081992 is about 95399.5911521637. The cubic root of 9101081992 is about 2087.8422204045.

The spelling of 9101081992 in words is "nine billion, one hundred one million, eighty-one thousand, nine hundred ninety-two".