1216259160 has 64 divisors (see below), whose sum is σ = 3840825600. Its totient is φ = 307264896.

The previous prime is 1216259147. The next prime is 1216259167. The reversal of 1216259160 is 619526121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216259167) 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, 264444 + ... + 269003.

It is an arithmetic number, because the mean of its divisors is an integer number (60012900).

Almost surely, 2^1216259160 is an apocalyptic number.

1216259160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216259160 is an abundant number, since it is smaller than the sum of its proper divisors (2624566440).

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

1216259160 is a wasteful number, since it uses less digits than its factorization.

1216259160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533480 (or 533476 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1216259160 is about 34874.9073117048. The cubic root of 1216259160 is about 1067.4364811827.

The spelling of 1216259160 in words is "one billion, two hundred sixteen million, two hundred fifty-nine thousand, one hundred sixty".