1216626002 has 8 divisors (see below), whose sum is σ = 1843008012. Its totient is φ = 602290000.

The previous prime is 1216625989. The next prime is 1216626013. The reversal of 1216626002 is 2006266121.

It can be written as a sum of positive squares in 2 ways, for example, as 1207632001 + 8994001 = 34751^2 + 2999^2 .

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

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, 3011249 + ... + 3011652.

Almost surely, 2^1216626002 is an apocalyptic number.

1216626002 is a deficient number, since it is larger than the sum of its proper divisors (626382010).

1216626002 is a wasteful number, since it uses less digits than its factorization.

1216626002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023004.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1216626002 is about 34880.1663126769. The cubic root of 1216626002 is about 1067.5437886778.

The spelling of 1216626002 in words is "one billion, two hundred sixteen million, six hundred twenty-six thousand, two".