1213224916 has 6 divisors (see below), whose sum is σ = 2123143610. Its totient is φ = 606612456.

The previous prime is 1213224871. The next prime is 1213224923. The reversal of 1213224916 is 6194223121.

It can be written as a sum of positive squares in only one way, i.e., 1183084816 + 30140100 = 34396^2 + 5490^2 .

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 as a sum of consecutive naturals, namely, 151653111 + ... + 151653118.

Almost surely, 2^1213224916 is an apocalyptic number.

It is an amenable number.

1213224916 is a deficient number, since it is larger than the sum of its proper divisors (909918694).

1213224916 is a wasteful number, since it uses less digits than its factorization.

1213224916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303306233 (or 303306231 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 1213224916 is about 34831.3783247232. The cubic root of 1213224916 is about 1066.5480850382.

The spelling of 1213224916 in words is "one billion, two hundred thirteen million, two hundred twenty-four thousand, nine hundred sixteen".