1113919691 has 2 divisors, whose sum is σ = 1113919692. Its totient is φ = 1113919690.

The previous prime is 1113919673. The next prime is 1113919699. The reversal of 1113919691 is 1969193111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1113919691 - 2⁶ = 1113919627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113919699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556959845 + 556959846.

It is an arithmetic number, because the mean of its divisors is an integer number (556959846).

Almost surely, 2^1113919691 is an apocalyptic number.

1113919691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113919691 is an equidigital number, since it uses as much as digits as its factorization.

1113919691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 41.

The square root of 1113919691 is about 33375.4354428523. The cubic root of 1113919691 is about 1036.6161254480.

The spelling of 1113919691 in words is "one billion, one hundred thirteen million, nine hundred nineteen thousand, six hundred ninety-one".