1197948589 has 2 divisors, whose sum is σ = 1197948590. Its totient is φ = 1197948588.

The previous prime is 1197948569. The next prime is 1197948599. The reversal of 1197948589 is 9858497911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1135016100 + 62932489 = 33690^2 + 7933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197948589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197948509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598974294 + 598974295.

It is an arithmetic number, because the mean of its divisors is an integer number (598974295).

Almost surely, 2^1197948589 is an apocalyptic number.

It is an amenable number.

1197948589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197948589 is an equidigital number, since it uses as much as digits as its factorization.

1197948589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 61.

The square root of 1197948589 is about 34611.3939187661. The cubic root of 1197948589 is about 1062.0526822732.

The spelling of 1197948589 in words is "one billion, one hundred ninety-seven million, nine hundred forty-eight thousand, five hundred eighty-nine".