1213084944 has 80 divisors (see below), whose sum is σ = 3665291200. Its totient is φ = 383076864.

The previous prime is 1213084937. The next prime is 1213084949. The reversal of 1213084944 is 4494803121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1213084899 and 1213084908.

It is not an unprimeable number, because it can be changed into a prime (1213084949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65689 + ... + 82104.

It is an arithmetic number, because the mean of its divisors is an integer number (45816140).

Almost surely, 2^1213084944 is an apocalyptic number.

It is an amenable number.

1213084944 is an abundant number, since it is smaller than the sum of its proper divisors (2452206256).

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

1213084944 is a wasteful number, since it uses less digits than its factorization.

1213084944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147829 (or 147817 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1213084944 is about 34829.3689865320. The cubic root of 1213084944 is about 1066.5070669197.

The spelling of 1213084944 in words is "one billion, two hundred thirteen million, eighty-four thousand, nine hundred forty-four".