1198789247 has 2 divisors, whose sum is σ = 1198789248. Its totient is φ = 1198789246.

The previous prime is 1198789181. The next prime is 1198789297. The reversal of 1198789247 is 7429878911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1198789247 - 2²² = 1194594943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1198789192 and 1198789201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198789297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599394623 + 599394624.

It is an arithmetic number, because the mean of its divisors is an integer number (599394624).

Almost surely, 2^1198789247 is an apocalyptic number.

1198789247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198789247 is an equidigital number, since it uses as much as digits as its factorization.

1198789247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 56.

The square root of 1198789247 is about 34623.5360268127. The cubic root of 1198789247 is about 1062.3010552913.

The spelling of 1198789247 in words is "one billion, one hundred ninety-eight million, seven hundred eighty-nine thousand, two hundred forty-seven".