1171255193 has 4 divisors (see below), whose sum is σ = 1171512420. Its totient is φ = 1170997968.

The previous prime is 1171255187. The next prime is 1171255201. The reversal of 1171255193 is 3915521711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149621824 + 1021633369 = 12232^2 + 31963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1171255193 - 2²⁰ = 1170206617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171255093) 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, 121658 + ... + 130931.

It is an arithmetic number, because the mean of its divisors is an integer number (292878105).

Almost surely, 2^1171255193 is an apocalyptic number.

It is an amenable number.

1171255193 is a deficient number, since it is larger than the sum of its proper divisors (257227).

1171255193 is an equidigital number, since it uses as much as digits as its factorization.

1171255193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257226.

The product of its digits is 9450, while the sum is 35.

The square root of 1171255193 is about 34223.6057860653. The cubic root of 1171255193 is about 1054.1049266811.

The spelling of 1171255193 in words is "one billion, one hundred seventy-one million, two hundred fifty-five thousand, one hundred ninety-three".