1216933516 has 12 divisors (see below), whose sum is σ = 2129884960. Its totient is φ = 608394960.

The previous prime is 1216933513. The next prime is 1216933561. The reversal of 1216933516 is 6153396121.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1216933513) 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, 43750 + ... + 65938.

Almost surely, 2^1216933516 is an apocalyptic number.

It is an amenable number.

1216933516 is a deficient number, since it is larger than the sum of its proper divisors (912951444).

1216933516 is a wasteful number, since it uses less digits than its factorization.

1216933516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35904 (or 35902 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 1216933516 is about 34884.5741840143. The cubic root of 1216933516 is about 1067.6337251099.

The spelling of 1216933516 in words is "one billion, two hundred sixteen million, nine hundred thirty-three thousand, five hundred sixteen".