1216524063 has 24 divisors (see below), whose sum is σ = 1729597968. Its totient is φ = 757944832.

The previous prime is 1216524061. The next prime is 1216524091. The reversal of 1216524063 is 3604256121.

It is not a de Polignac number, because 1216524063 - 2¹ = 1216524061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1216524063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216524061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1525981 + ... + 1526777.

It is an arithmetic number, because the mean of its divisors is an integer number (72066582).

Almost surely, 2^1216524063 is an apocalyptic number.

1216524063 is a deficient number, since it is larger than the sum of its proper divisors (513073905).

1216524063 is an equidigital number, since it uses as much as digits as its factorization.

1216524063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1216524063 is about 34878.7050074971. The cubic root of 1216524063 is about 1067.5139719591.

The spelling of 1216524063 in words is "one billion, two hundred sixteen million, five hundred twenty-four thousand, sixty-three".