1168445687 has 4 divisors (see below), whose sum is σ = 1168667976. Its totient is φ = 1168223400.

The previous prime is 1168445659. The next prime is 1168445689. The reversal of 1168445687 is 7865448611.

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

It is a cyclic number.

It is not a de Polignac number, because 1168445687 - 2⁶ = 1168445623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168445689) 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, 103064 + ... + 113837.

It is an arithmetic number, because the mean of its divisors is an integer number (292166994).

Almost surely, 2^1168445687 is an apocalyptic number.

1168445687 is a deficient number, since it is larger than the sum of its proper divisors (222289).

1168445687 is an equidigital number, since it uses as much as digits as its factorization.

1168445687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222288.

The product of its digits is 1290240, while the sum is 50.

The square root of 1168445687 is about 34182.5348240882. The cubic root of 1168445687 is about 1053.2614198643.

The spelling of 1168445687 in words is "one billion, one hundred sixty-eight million, four hundred forty-five thousand, six hundred eighty-seven".