1216341444 has 12 divisors (see below), whose sum is σ = 2838130064. Its totient is φ = 405447144.

The previous prime is 1216341397. The next prime is 1216341457. The reversal of 1216341444 is 4441436121.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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, 50680882 + ... + 50680905.

Almost surely, 2^1216341444 is an apocalyptic number.

It is an amenable number.

1216341444 is an abundant number, since it is smaller than the sum of its proper divisors (1621788620).

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

1216341444 is a wasteful number, since it uses less digits than its factorization.

1216341444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101361794 (or 101361792 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 1216341444 is about 34876.0869938128. The cubic root of 1216341444 is about 1067.4605525226.

Adding to 1216341444 its reverse (4441436121), we get a palindrome (5657777565).

The spelling of 1216341444 in words is "one billion, two hundred sixteen million, three hundred forty-one thousand, four hundred forty-four".