1216648495 has 8 divisors (see below), whose sum is σ = 1466411184. Its totient is φ = 969030144.

The previous prime is 1216648471. The next prime is 1216648507. The reversal of 1216648495 is 5948466121.

It is a happy number.

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 1216648495 - 2⁹ = 1216647983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 534834 + ... + 537103.

It is an arithmetic number, because the mean of its divisors is an integer number (183301398).

Almost surely, 2^1216648495 is an apocalyptic number.

1216648495 is a deficient number, since it is larger than the sum of its proper divisors (249762689).

1216648495 is a wasteful number, since it uses less digits than its factorization.

1216648495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072169.

The product of its digits is 414720, while the sum is 46.

The square root of 1216648495 is about 34880.4887437089. The cubic root of 1216648495 is about 1067.5503675591.

The spelling of 1216648495 in words is "one billion, two hundred sixteen million, six hundred forty-eight thousand, four hundred ninety-five".