1216144352 has 24 divisors (see below), whose sum is σ = 2402002512. Its totient is φ = 606112000.

The previous prime is 1216144339. The next prime is 1216144357. The reversal of 1216144352 is 2534416121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216144357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51149 + ... + 71052.

It is an arithmetic number, because the mean of its divisors is an integer number (100083438).

Almost surely, 2^1216144352 is an apocalyptic number.

It is an amenable number.

1216144352 is a deficient number, since it is larger than the sum of its proper divisors (1185858160).

1216144352 is a wasteful number, since it uses less digits than its factorization.

1216144352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122522 (or 122514 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1216144352 is about 34873.2612756536. The cubic root of 1216144352 is about 1067.4028934662.

The spelling of 1216144352 in words is "one billion, two hundred sixteen million, one hundred forty-four thousand, three hundred fifty-two".