1141196991 has 16 divisors (see below), whose sum is σ = 1660758528. Its totient is φ = 691286400.

The previous prime is 1141196971. The next prime is 1141196999. The reversal of 1141196991 is 1996911411.

It is not a de Polignac number, because 1141196991 - 2¹⁵ = 1141164223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141196999) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 67911 + ... + 83031.

It is an arithmetic number, because the mean of its divisors is an integer number (103797408).

Almost surely, 2^1141196991 is an apocalyptic number.

1141196991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1141196991 is a deficient number, since it is larger than the sum of its proper divisors (519561537).

1141196991 is a wasteful number, since it uses less digits than its factorization.

1141196991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422.

The product of its digits is 17496, while the sum is 42.

The square root of 1141196991 is about 33781.6072885823. The cubic root of 1141196991 is about 1045.0094215553.

The spelling of 1141196991 in words is "one billion, one hundred forty-one million, one hundred ninety-six thousand, nine hundred ninety-one".