1111857497 has 2 divisors, whose sum is σ = 1111857498. Its totient is φ = 1111857496.

The previous prime is 1111857473. The next prime is 1111857541. The reversal of 1111857497 is 7947581111.

It is an a-pointer prime, because the next prime (1111857541) can be obtained adding 1111857497 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109955856 + 1901641 = 33316^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111857497 - 2⁶ = 1111857433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111850497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555928748 + 555928749.

It is an arithmetic number, because the mean of its divisors is an integer number (555928749).

Almost surely, 2^1111857497 is an apocalyptic number.

It is an amenable number.

1111857497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111857497 is an equidigital number, since it uses as much as digits as its factorization.

1111857497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 44.

The square root of 1111857497 is about 33344.5272421128. The cubic root of 1111857497 is about 1035.9760361898.

The spelling of 1111857497 in words is "one billion, one hundred eleven million, eight hundred fifty-seven thousand, four hundred ninety-seven".