1198063817 has 2 divisors, whose sum is σ = 1198063818. Its totient is φ = 1198063816.

The previous prime is 1198063733. The next prime is 1198063837. The reversal of 1198063817 is 7183608911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870309001 + 327754816 = 29501^2 + 18104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198063817 - 2¹⁰ = 1198062793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1198063837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599031908 + 599031909.

It is an arithmetic number, because the mean of its divisors is an integer number (599031909).

Almost surely, 2^1198063817 is an apocalyptic number.

It is an amenable number.

1198063817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198063817 is an equidigital number, since it uses as much as digits as its factorization.

1198063817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1198063817 is about 34613.0584750900. The cubic root of 1198063817 is about 1062.0867333402.

The spelling of 1198063817 in words is "one billion, one hundred ninety-eight million, sixty-three thousand, eight hundred seventeen".