1210689113 has 2 divisors, whose sum is σ = 1210689114. Its totient is φ = 1210689112.

The previous prime is 1210689091. The next prime is 1210689127. The reversal of 1210689113 is 3119860121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838507849 + 372181264 = 28957^2 + 19292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210689113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210689113.

It is not a weakly prime, because it can be changed into another prime (1210689133) 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, 605344556 + 605344557.

It is an arithmetic number, because the mean of its divisors is an integer number (605344557).

Almost surely, 2^1210689113 is an apocalyptic number.

It is an amenable number.

1210689113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210689113 is an equidigital number, since it uses as much as digits as its factorization.

1210689113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1210689113 is about 34794.9581548822. The cubic root of 1210689113 is about 1065.8044904846.

The spelling of 1210689113 in words is "one billion, two hundred ten million, six hundred eighty-nine thousand, one hundred thirteen".