1121866673 has 2 divisors, whose sum is σ = 1121866674. Its totient is φ = 1121866672.

The previous prime is 1121866663. The next prime is 1121866721. The reversal of 1121866673 is 3766681211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1114424689 + 7441984 = 33383^2 + 2728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121866673 - 2¹⁶ = 1121801137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121866673.

It is not a weakly prime, because it can be changed into another prime (1121866663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560933336 + 560933337.

It is an arithmetic number, because the mean of its divisors is an integer number (560933337).

Almost surely, 2^1121866673 is an apocalyptic number.

It is an amenable number.

1121866673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121866673 is an equidigital number, since it uses as much as digits as its factorization.

1121866673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 1121866673 is about 33494.2782128530. The cubic root of 1121866673 is about 1039.0754458868.

The spelling of 1121866673 in words is "one billion, one hundred twenty-one million, eight hundred sixty-six thousand, six hundred seventy-three".