1319720268 has 24 divisors (see below), whose sum is σ = 3260485872. Its totient is φ = 414029824.

The previous prime is 1319720263. The next prime is 1319720309. The reversal of 1319720268 is 8620279131.

It is not an unprimeable number, because it can be changed into a prime (1319720261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3234405 + ... + 3234812.

It is an arithmetic number, because the mean of its divisors is an integer number (135853578).

Almost surely, 2^1319720268 is an apocalyptic number.

It is an amenable number.

1319720268 is an abundant number, since it is smaller than the sum of its proper divisors (1940765604).

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

1319720268 is a wasteful number, since it uses less digits than its factorization.

1319720268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469241 (or 6469239 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1319720268 is about 36327.9543602444. The cubic root of 1319720268 is about 1096.8838163300.

Adding to 1319720268 its reverse (8620279131), we get a palindrome (9939999399).

The spelling of 1319720268 in words is "one billion, three hundred nineteen million, seven hundred twenty thousand, two hundred sixty-eight".