1217608912 has 20 divisors (see below), whose sum is σ = 2540588260. Its totient is φ = 561973248.

The previous prime is 1217608907. The next prime is 1217608933. The reversal of 1217608912 is 2198067121.

It can be written as a sum of positive squares in 2 ways, for example, as 453860416 + 763748496 = 21304^2 + 27636^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926737 + ... + 2927152.

It is an arithmetic number, because the mean of its divisors is an integer number (127029413).

Almost surely, 2^1217608912 is an apocalyptic number.

It is an amenable number.

1217608912 is an abundant number, since it is smaller than the sum of its proper divisors (1322979348).

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

1217608912 is a wasteful number, since it uses less digits than its factorization.

1217608912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853910 (or 5853904 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1217608912 is about 34894.2532804472. The cubic root of 1217608912 is about 1067.8312002062.

The spelling of 1217608912 in words is "one billion, two hundred seventeen million, six hundred eight thousand, nine hundred twelve".