1114444781 has 2 divisors, whose sum is σ = 1114444782. Its totient is φ = 1114444780.

The previous prime is 1114444763. The next prime is 1114444787. The reversal of 1114444781 is 1874444111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747147556 + 367297225 = 27334^2 + 19165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1114444781 is a prime.

It is a super-2 number, since 2×1114444781² = 2483974339796275922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1114444787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557222390 + 557222391.

It is an arithmetic number, because the mean of its divisors is an integer number (557222391).

Almost surely, 2^1114444781 is an apocalyptic number.

It is an amenable number.

1114444781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1114444781 is an equidigital number, since it uses as much as digits as its factorization.

1114444781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 35.

The square root of 1114444781 is about 33383.3009302555. The cubic root of 1114444781 is about 1036.7789831656.

Adding to 1114444781 its reverse (1874444111), we get a palindrome (2988888892).

The spelling of 1114444781 in words is "one billion, one hundred fourteen million, four hundred forty-four thousand, seven hundred eighty-one".