1216741180 has 24 divisors (see below), whose sum is σ = 2560995360. Its totient is φ = 485584320.

The previous prime is 1216741177. The next prime is 1216741181. The reversal of 1216741180 is 811476121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216741181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60511 + ... + 78070.

It is an arithmetic number, because the mean of its divisors is an integer number (106708140).

Almost surely, 2^1216741180 is an apocalyptic number.

1216741180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216741180 is an abundant number, since it is smaller than the sum of its proper divisors (1344254180).

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

1216741180 is a wasteful number, since it uses less digits than its factorization.

1216741180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139029 (or 139027 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 1216741180 is about 34881.8173265098. The cubic root of 1216741180 is about 1067.5774757430.

The spelling of 1216741180 in words is "one billion, two hundred sixteen million, seven hundred forty-one thousand, one hundred eighty".