1111264681 has 2 divisors, whose sum is σ = 1111264682. Its totient is φ = 1111264680.

The previous prime is 1111264669. The next prime is 1111264691. The reversal of 1111264681 is 1864621111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1108890000 + 2374681 = 33300^2 + 1541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111264681 - 2⁹ = 1111264169 is a prime.

It is a super-2 number, since 2×1111264681² = 2469818382476063522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111264691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555632340 + 555632341.

It is an arithmetic number, because the mean of its divisors is an integer number (555632341).

Almost surely, 2^1111264681 is an apocalyptic number.

It is an amenable number.

1111264681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111264681 is an equidigital number, since it uses as much as digits as its factorization.

1111264681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 31.

The square root of 1111264681 is about 33335.6368020771. The cubic root of 1111264681 is about 1035.7918841881.

Adding to 1111264681 its reverse (1864621111), we get a palindrome (2975885792).

The spelling of 1111264681 in words is "one billion, one hundred eleven million, two hundred sixty-four thousand, six hundred eighty-one".