1171130643 has 40 divisors (see below), whose sum is σ = 1785536016. Its totient is φ = 764769600.

The previous prime is 1171130621. The next prime is 1171130651. The reversal of 1171130643 is 3460311711.

1171130643 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 13 + 0 + 643 = 666.

It is not a de Polignac number, because 1171130643 - 2⁶ = 1171130579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1171130603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2079880 + ... + 2080442.

Almost surely, 2^1171130643 is an apocalyptic number.

1171130643 is a deficient number, since it is larger than the sum of its proper divisors (614405373).

1171130643 is an equidigital number, since it uses as much as digits as its factorization.

1171130643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1171130643 is about 34221.7860872281. The cubic root of 1171130643 is about 1054.0675612338.

The spelling of 1171130643 in words is "one billion, one hundred seventy-one million, one hundred thirty thousand, six hundred forty-three".