1216033364 has 48 divisors (see below), whose sum is σ = 2757014400. Its totient is φ = 455746176.

The previous prime is 1216033289. The next prime is 1216033367. The reversal of 1216033364 is 4633306121.

It is a super-2 number, since 2×1216033364² = 2957474284722312992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216033367) 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, 80999 + ... + 94830.

It is an arithmetic number, because the mean of its divisors is an integer number (57437800).

Almost surely, 2^1216033364 is an apocalyptic number.

1216033364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1216033364 is an abundant number, since it is smaller than the sum of its proper divisors (1540981036).

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

1216033364 is a wasteful number, since it uses less digits than its factorization.

1216033364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175872 (or 175870 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1216033364 is about 34871.6699342030. The cubic root of 1216033364 is about 1067.3704213022.

Adding to 1216033364 its reverse (4633306121), we get a palindrome (5849339485).

The spelling of 1216033364 in words is "one billion, two hundred sixteen million, thirty-three thousand, three hundred sixty-four".