1198789201 has 4 divisors (see below), whose sum is σ = 1228028004. Its totient is φ = 1169550400.

The previous prime is 1198789181. The next prime is 1198789247. The reversal of 1198789201 is 1029878911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1029878911 = 149 ⋅6911939.

It can be written as a sum of positive squares in 2 ways, for example, as 29149201 + 1169640000 = 5399^2 + 34200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198789201 - 2¹³ = 1198781009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198786201) 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 in 3 ways as a sum of consecutive naturals, for example, 14619340 + ... + 14619421.

It is an arithmetic number, because the mean of its divisors is an integer number (307007001).

Almost surely, 2^1198789201 is an apocalyptic number.

It is an amenable number.

1198789201 is a deficient number, since it is larger than the sum of its proper divisors (29238803).

1198789201 is an equidigital number, since it uses as much as digits as its factorization.

1198789201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29238802.

The product of its (nonzero) digits is 72576, while the sum is 46.

The square root of 1198789201 is about 34623.5353625247. The cubic root of 1198789201 is about 1062.3010417037.

The spelling of 1198789201 in words is "one billion, one hundred ninety-eight million, seven hundred eighty-nine thousand, two hundred one".