1171356641 has 16 divisors (see below), whose sum is σ = 1447678848. Its totient is φ = 922924800.

The previous prime is 1171356623. The next prime is 1171356643. The reversal of 1171356641 is 1466531711.

It is not a de Polignac number, because 1171356641 - 2¹⁴ = 1171340257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1171356643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4775 + ... + 48636.

It is an arithmetic number, because the mean of its divisors is an integer number (90479928).

Almost surely, 2^1171356641 is an apocalyptic number.

It is an amenable number.

1171356641 is a deficient number, since it is larger than the sum of its proper divisors (276322207).

1171356641 is a wasteful number, since it uses less digits than its factorization.

1171356641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53672.

The product of its digits is 15120, while the sum is 35.

The square root of 1171356641 is about 34225.0878888572. The cubic root of 1171356641 is about 1054.1353594880.

The spelling of 1171356641 in words is "one billion, one hundred seventy-one million, three hundred fifty-six thousand, six hundred forty-one".