1229504668 has 72 divisors (see below), whose sum is σ = 2789776080. Its totient is φ = 469808640.

The previous prime is 1229504587. The next prime is 1229504693. The reversal of 1229504668 is 8664059221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53598 + ... + 73018.

It is an arithmetic number, because the mean of its divisors is an integer number (38746890).

Almost surely, 2^1229504668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229504668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394888040).

1229504668 is an abundant number, since it is smaller than the sum of its proper divisors (1560271412).

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

1229504668 is a wasteful number, since it uses less digits than its factorization.

1229504668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19475 (or 19466 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1229504668 is about 35064.2933480770. The cubic root of 1229504668 is about 1071.2974240526.

The spelling of 1229504668 in words is "one billion, two hundred twenty-nine million, five hundred four thousand, six hundred sixty-eight".