1216968935 has 32 divisors (see below), whose sum is σ = 1799572992. Its totient is φ = 769357440.

The previous prime is 1216968923. The next prime is 1216968937. The reversal of 1216968935 is 5398696121.

It is a happy number.

It is not a de Polignac number, because 1216968935 - 2²⁴ = 1200191719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216968937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 695732 + ... + 697478.

It is an arithmetic number, because the mean of its divisors is an integer number (56236656).

Almost surely, 2^1216968935 is an apocalyptic number.

1216968935 is a deficient number, since it is larger than the sum of its proper divisors (582604057).

1216968935 is a wasteful number, since it uses less digits than its factorization.

1216968935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303.

The product of its digits is 699840, while the sum is 50.

The square root of 1216968935 is about 34885.0818402365. The cubic root of 1216968935 is about 1067.6440828798.

The spelling of 1216968935 in words is "one billion, two hundred sixteen million, nine hundred sixty-eight thousand, nine hundred thirty-five".