1216061833 has 16 divisors (see below), whose sum is σ = 1472739840. Its totient is φ = 980222976.

The previous prime is 1216061827. The next prime is 1216061849. The reversal of 1216061833 is 3381606121.

It is a cyclic number.

It is not a de Polignac number, because 1216061833 - 2¹⁷ = 1215930761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1216061795 and 1216061804.

It is not an unprimeable number, because it can be changed into a prime (1216061863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173760 + ... + 180622.

It is an arithmetic number, because the mean of its divisors is an integer number (92046240).

Almost surely, 2^1216061833 is an apocalyptic number.

It is an amenable number.

1216061833 is a deficient number, since it is larger than the sum of its proper divisors (256678007).

1216061833 is a wasteful number, since it uses less digits than its factorization.

1216061833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8376.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1216061833 is about 34872.0781284970. The cubic root of 1216061833 is about 1067.3787507698.

Adding to 1216061833 its reverse (3381606121), we get a palindrome (4597667954).

The spelling of 1216061833 in words is "one billion, two hundred sixteen million, sixty-one thousand, eight hundred thirty-three".