1198266271 has 4 divisors (see below), whose sum is σ = 1199093544. Its totient is φ = 1197439000.

The previous prime is 1198266247. The next prime is 1198266313. The reversal of 1198266271 is 1726628911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1726628911 = 7 ⋅246661273.

It is a cyclic number.

It is not a de Polignac number, because 1198266271 - 2¹⁵ = 1198233503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198266211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411460 + ... + 414361.

It is an arithmetic number, because the mean of its divisors is an integer number (299773386).

Almost surely, 2^1198266271 is an apocalyptic number.

1198266271 is a deficient number, since it is larger than the sum of its proper divisors (827273).

1198266271 is an equidigital number, since it uses as much as digits as its factorization.

1198266271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827272.

The product of its digits is 72576, while the sum is 43.

The square root of 1198266271 is about 34615.9828836334. The cubic root of 1198266271 is about 1062.1465553057.

The spelling of 1198266271 in words is "one billion, one hundred ninety-eight million, two hundred sixty-six thousand, two hundred seventy-one".