1109999992 has 8 divisors (see below), whose sum is σ = 2081250000. Its totient is φ = 554999992.

The previous prime is 1109999971. The next prime is 1109999993. The reversal of 1109999992 is 2999999011.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109999993) 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, 69374992 + ... + 69375007.

It is an arithmetic number, because the mean of its divisors is an integer number (260156250).

Almost surely, 2^1109999992 is an apocalyptic number.

It is an amenable number.

1109999992 is a deficient number, since it is larger than the sum of its proper divisors (971250008).

1109999992 is a wasteful number, since it uses less digits than its factorization.

1109999992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138750005 (or 138750001 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 58.

The square root of 1109999992 is about 33316.6623778553. The cubic root of 1109999992 is about 1035.3988029610.

The spelling of 1109999992 in words is "one billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-two".