1216332434 has 8 divisors (see below), whose sum is σ = 1825047180. Its totient is φ = 607983376.

The previous prime is 1216332431. The next prime is 1216332479. The reversal of 1216332434 is 4342336121.

It can be written as a sum of positive squares in 2 ways, for example, as 814931209 + 401401225 = 28547^2 + 20035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1216332397 and 1216332406.

It is not an unprimeable number, because it can be changed into a prime (1216332431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82949 + ... + 96504.

Almost surely, 2^1216332434 is an apocalyptic number.

1216332434 is a deficient number, since it is larger than the sum of its proper divisors (608714746).

1216332434 is a wasteful number, since it uses less digits than its factorization.

1216332434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182844.

The product of its digits is 10368, while the sum is 29.

The square root of 1216332434 is about 34875.9578219724. The cubic root of 1216332434 is about 1067.4579167925.

Adding to 1216332434 its reverse (4342336121), we get a palindrome (5558668555).

The spelling of 1216332434 in words is "one billion, two hundred sixteen million, three hundred thirty-two thousand, four hundred thirty-four".