1169986812 has 12 divisors (see below), whose sum is σ = 2729969256. Its totient is φ = 389995600.

The previous prime is 1169986799. The next prime is 1169986813. The reversal of 1169986812 is 2186899611.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1169986813) 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 3 ways as a sum of consecutive naturals, for example, 48749439 + ... + 48749462.

It is an arithmetic number, because the mean of its divisors is an integer number (227497438).

Almost surely, 2^1169986812 is an apocalyptic number.

1169986812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1169986812 is an abundant number, since it is smaller than the sum of its proper divisors (1559982444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1169986812 is a wasteful number, since it uses less digits than its factorization.

1169986812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97498908 (or 97498906 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 1169986812 is about 34205.0699750783. The cubic root of 1169986812 is about 1053.7242838786.

The spelling of 1169986812 in words is "one billion, one hundred sixty-nine million, nine hundred eighty-six thousand, eight hundred twelve".