1091140396 has 24 divisors (see below), whose sum is σ = 1931474160. Its totient is φ = 539323200.

The previous prime is 1091140381. The next prime is 1091140403. The reversal of 1091140396 is 6930411901.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137086 + ... + 144826.

It is an arithmetic number, because the mean of its divisors is an integer number (80478090).

Almost surely, 2^1091140396 is an apocalyptic number.

It is an amenable number.

1091140396 is a deficient number, since it is larger than the sum of its proper divisors (840333764).

1091140396 is a wasteful number, since it uses less digits than its factorization.

1091140396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145 (or 8143 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1091140396 is about 33032.4143229041. The cubic root of 1091140396 is about 1029.5012497191.

The spelling of 1091140396 in words is "one billion, ninety-one million, one hundred forty thousand, three hundred ninety-six".