1171170872 has 16 divisors (see below), whose sum is σ = 2215380240. Its totient is φ = 580402816.

The previous prime is 1171170857. The next prime is 1171170877. The reversal of 1171170872 is 2780711711.

It is a happy number.

It is a super-2 number, since 2×1171170872² = 2743282422842480768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171170877) 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, 646868 + ... + 648675.

It is an arithmetic number, because the mean of its divisors is an integer number (138461265).

Almost surely, 2^1171170872 is an apocalyptic number.

It is an amenable number.

1171170872 is a deficient number, since it is larger than the sum of its proper divisors (1044209368).

1171170872 is a wasteful number, since it uses less digits than its factorization.

1171170872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295662 (or 1295658 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 35.

The square root of 1171170872 is about 34222.3738510349. The cubic root of 1171170872 is about 1054.0796303679.

The spelling of 1171170872 in words is "one billion, one hundred seventy-one million, one hundred seventy thousand, eight hundred seventy-two".