1208840812 has 12 divisors (see below), whose sum is σ = 2117755080. Its totient is φ = 603767936.

The previous prime is 1208840807. The next prime is 1208840813. The reversal of 1208840812 is 2180488021.

It is a super-2 number, since 2×1208840812² = 2922592217513638688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1208840813) 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 3 ways as a sum of consecutive naturals, for example, 158938 + ... + 166369.

It is an arithmetic number, because the mean of its divisors is an integer number (176479590).

Almost surely, 2^1208840812 is an apocalyptic number.

It is an amenable number.

1208840812 is a deficient number, since it is larger than the sum of its proper divisors (908914268).

1208840812 is a wasteful number, since it uses less digits than its factorization.

1208840812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326240 (or 326238 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 1208840812 is about 34768.3881133423. The cubic root of 1208840812 is about 1065.2618433810.

It can be divided in two parts, 12088 and 40812, that added together give a square (52900 = 230²).

The spelling of 1208840812 in words is "one billion, two hundred eight million, eight hundred forty thousand, eight hundred twelve".