1216456967 has 8 divisors (see below), whose sum is σ = 1327575312. Its totient is φ = 1105427200.

The previous prime is 1216456949. The next prime is 1216456973. The reversal of 1216456967 is 7696546121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1216456967 - 2¹⁸ = 1216194823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216452967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8417 + ... + 50037.

It is an arithmetic number, because the mean of its divisors is an integer number (165946914).

Almost surely, 2^1216456967 is an apocalyptic number.

1216456967 is a deficient number, since it is larger than the sum of its proper divisors (111118345).

1216456967 is a wasteful number, since it uses less digits than its factorization.

1216456967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44289.

The product of its digits is 544320, while the sum is 47.

The square root of 1216456967 is about 34877.7431465971. The cubic root of 1216456967 is about 1067.4943457589.

The spelling of 1216456967 in words is "one billion, two hundred sixteen million, four hundred fifty-six thousand, nine hundred sixty-seven".