1268645922 has 64 divisors (see below), whose sum is σ = 3063398400. Its totient is φ = 387691920.

The previous prime is 1268645921. The next prime is 1268645947. The reversal of 1268645922 is 2295468621.

It is not an unprimeable number, because it can be changed into a prime (1268645921) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11863 + ... + 51749.

It is an arithmetic number, because the mean of its divisors is an integer number (47865600).

Almost surely, 2^1268645922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268645922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1531699200).

1268645922 is an abundant number, since it is smaller than the sum of its proper divisors (1794752478).

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

1268645922 is a wasteful number, since it uses less digits than its factorization.

1268645922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39948 (or 39942 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1268645922 is about 35618.0561232642. The cubic root of 1268645922 is about 1082.5471207489.

The spelling of 1268645922 in words is "one billion, two hundred sixty-eight million, six hundred forty-five thousand, nine hundred twenty-two".