1019213268 has 12 divisors (see below), whose sum is σ = 2378164320. Its totient is φ = 339737752.

The previous prime is 1019213263. The next prime is 1019213297. The reversal of 1019213268 is 8623129101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019213263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42467208 + ... + 42467231.

It is an arithmetic number, because the mean of its divisors is an integer number (198180360).

Almost surely, 2^1019213268 is an apocalyptic number.

It is an amenable number.

1019213268 is an abundant number, since it is smaller than the sum of its proper divisors (1358951052).

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

1019213268 is a wasteful number, since it uses less digits than its factorization.

1019213268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84934446 (or 84934444 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1019213268 is about 31925.1197022032. The cubic root of 1019213268 is about 1006.3638383200.

The spelling of 1019213268 in words is "one billion, nineteen million, two hundred thirteen thousand, two hundred sixty-eight".