1213116160 has 36 divisors (see below), whose sum is σ = 2905795368. Its totient is φ = 485245952.

The previous prime is 1213116127. The next prime is 1213116173. The reversal of 1213116160 is 616113121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472594 + ... + 475153.

It is an arithmetic number, because the mean of its divisors is an integer number (80716538).

Almost surely, 2^1213116160 is an apocalyptic number.

1213116160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213116160 is an abundant number, since it is smaller than the sum of its proper divisors (1692679208).

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

1213116160 is an frugal number, since it uses more digits than its factorization.

1213116160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947768 (or 947754 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1213116160 is about 34829.8171112052. The cubic root of 1213116160 is about 1066.5162148911.

Adding to 1213116160 its reverse (616113121), we get a palindrome (1829229281).

The spelling of 1213116160 in words is "one billion, two hundred thirteen million, one hundred sixteen thousand, one hundred sixty".