1229818956 has 24 divisors (see below), whose sum is σ = 2870919744. Its totient is φ = 409747920.

The previous prime is 1229818907. The next prime is 1229818957. The reversal of 1229818956 is 6598189221.

It is a junction number, because it is equal to n+sod(n) for n = 1229818899 and 1229818908.

It is not an unprimeable number, because it can be changed into a prime (1229818957) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4071 + ... + 49761.

It is an arithmetic number, because the mean of its divisors is an integer number (119621656).

Almost surely, 2^1229818956 is an apocalyptic number.

It is an amenable number.

1229818956 is an abundant number, since it is smaller than the sum of its proper divisors (1641100788).

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

1229818956 is a wasteful number, since it uses less digits than its factorization.

1229818956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47941 (or 47939 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 1229818956 is about 35068.7746578063. The cubic root of 1229818956 is about 1071.3886985441.

The spelling of 1229818956 in words is "one billion, two hundred twenty-nine million, eight hundred eighteen thousand, nine hundred fifty-six".