1216366848 has 72 divisors (see below), whose sum is σ = 3597031200. Its totient is φ = 405453312.

The previous prime is 1216366829. The next prime is 1216366859. The reversal of 1216366848 is 8486636121.

1216366848 is a `hidden beast` number, since 1 + 2 + 1 + 636 + 6 + 8 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81078 + ... + 94901.

Almost surely, 2^1216366848 is an apocalyptic number.

1216366848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1216366848 is an abundant number, since it is smaller than the sum of its proper divisors (2380664352).

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

1216366848 is an equidigital number, since it uses as much as digits as its factorization.

1216366848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176004 (or 175984 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1216366848 is about 34876.4511956134. The cubic root of 1216366848 is about 1067.4679839828.

The spelling of 1216366848 in words is "one billion, two hundred sixteen million, three hundred sixty-six thousand, eight hundred forty-eight".