1111775641 has 2 divisors, whose sum is σ = 1111775642. Its totient is φ = 1111775640.

The previous prime is 1111775591. The next prime is 1111775663. The reversal of 1111775641 is 1465771111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869070400 + 242705241 = 29480^2 + 15579^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111775641 - 2¹⁹ = 1111251353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111775597 and 1111775606.

It is not a weakly prime, because it can be changed into another prime (1111775681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555887820 + 555887821.

It is an arithmetic number, because the mean of its divisors is an integer number (555887821).

Almost surely, 2^1111775641 is an apocalyptic number.

It is an amenable number.

1111775641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111775641 is an equidigital number, since it uses as much as digits as its factorization.

1111775641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 34.

The square root of 1111775641 is about 33343.2997917123. The cubic root of 1111775641 is about 1035.9506123875.

The spelling of 1111775641 in words is "one billion, one hundred eleven million, seven hundred seventy-five thousand, six hundred forty-one".