1111441913 has 2 divisors, whose sum is σ = 1111441914. Its totient is φ = 1111441912.

The previous prime is 1111441883. The next prime is 1111441937. The reversal of 1111441913 is 3191441111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919120489 + 192321424 = 30317^2 + 13868^2 .

It is an emirp because it is prime and its reverse (3191441111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111441913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111441943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555720956 + 555720957.

It is an arithmetic number, because the mean of its divisors is an integer number (555720957).

Almost surely, 2^1111441913 is an apocalyptic number.

It is an amenable number.

1111441913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111441913 is an equidigital number, since it uses as much as digits as its factorization.

1111441913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 26.

The square root of 1111441913 is about 33338.2949923958. The cubic root of 1111441913 is about 1035.8469462905.

The spelling of 1111441913 in words is "one billion, one hundred eleven million, four hundred forty-one thousand, nine hundred thirteen".