1216053753 has 16 divisors (see below), whose sum is σ = 1635451776. Its totient is φ = 803705600.

The previous prime is 1216053737. The next prime is 1216053757. The reversal of 1216053753 is 3573506121.

1216053753 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1216053753 - 2⁴ = 1216053737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1216053757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197875 + ... + 203927.

It is an arithmetic number, because the mean of its divisors is an integer number (102215736).

Almost surely, 2^1216053753 is an apocalyptic number.

It is an amenable number.

1216053753 is a deficient number, since it is larger than the sum of its proper divisors (419398023).

1216053753 is a wasteful number, since it uses less digits than its factorization.

1216053753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6624.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 1216053753 is about 34871.9622763044. The cubic root of 1216053753 is about 1067.3763867344.

Adding to 1216053753 its reverse (3573506121), we get a palindrome (4789559874).

The spelling of 1216053753 in words is "one billion, two hundred sixteen million, fifty-three thousand, seven hundred fifty-three".