1196889121 has 2 divisors, whose sum is σ = 1196889122. Its totient is φ = 1196889120.

The previous prime is 1196889091. The next prime is 1196889181. The reversal of 1196889121 is 1219886911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 905709025 + 291180096 = 30095^2 + 17064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1196889121 - 2²⁹ = 660018209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1196889181) 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, 598444560 + 598444561.

It is an arithmetic number, because the mean of its divisors is an integer number (598444561).

Almost surely, 2^1196889121 is an apocalyptic number.

It is an amenable number.

1196889121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196889121 is an equidigital number, since it uses as much as digits as its factorization.

1196889121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 46.

The square root of 1196889121 is about 34596.0853421308. The cubic root of 1196889121 is about 1061.7394961267.

The spelling of 1196889121 in words is "one billion, one hundred ninety-six million, eight hundred eighty-nine thousand, one hundred twenty-one".