1216246626 has 48 divisors (see below), whose sum is σ = 3019723200. Its totient is φ = 346568544.

The previous prime is 1216246607. The next prime is 1216246651. The reversal of 1216246626 is 6266426121.

1216246626 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 24 + 6 + 626 = 666.

1216246626 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35020 + ... + 60488.

It is an arithmetic number, because the mean of its divisors is an integer number (62910900).

Almost surely, 2^1216246626 is an apocalyptic number.

1216246626 is an abundant number, since it is smaller than the sum of its proper divisors (1803476574).

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

1216246626 is a wasteful number, since it uses less digits than its factorization.

1216246626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25863 (or 25860 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1216246626 is about 34874.7276118395. The cubic root of 1216246626 is about 1067.4328143944.

The spelling of 1216246626 in words is "one billion, two hundred sixteen million, two hundred forty-six thousand, six hundred twenty-six".