1171570161 has 8 divisors (see below), whose sum is σ = 1571677600. Its totient is φ = 776254752.

The previous prime is 1171570129. The next prime is 1171570177. The reversal of 1171570161 is 1610751711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1171570161 - 2⁵ = 1171570129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1171570061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197436 + ... + 1198413.

It is an arithmetic number, because the mean of its divisors is an integer number (196459700).

Almost surely, 2^1171570161 is an apocalyptic number.

It is an amenable number.

1171570161 is a deficient number, since it is larger than the sum of its proper divisors (400107439).

1171570161 is a wasteful number, since it uses less digits than its factorization.

1171570161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396015.

The product of its (nonzero) digits is 1470, while the sum is 30.

The square root of 1171570161 is about 34228.2070959026. The cubic root of 1171570161 is about 1054.1994063943.

The spelling of 1171570161 in words is "one billion, one hundred seventy-one million, five hundred seventy thousand, one hundred sixty-one".