1268019512 has 8 divisors (see below), whose sum is σ = 2377536600. Its totient is φ = 634009752.

The previous prime is 1268019491. The next prime is 1268019523. The reversal of 1268019512 is 2159108621.

It is a tau number, because it is divible by the number of its divisors (8).

1268019512 is a modest number, since divided by 19512 gives 12680 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79251212 + ... + 79251227.

It is an arithmetic number, because the mean of its divisors is an integer number (297192075).

Almost surely, 2^1268019512 is an apocalyptic number.

It is an amenable number.

1268019512 is a deficient number, since it is larger than the sum of its proper divisors (1109517088).

1268019512 is a wasteful number, since it uses less digits than its factorization.

1268019512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158502445 (or 158502441 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 1268019512 is about 35609.2616042512. The cubic root of 1268019512 is about 1082.3689176295.

The spelling of 1268019512 in words is "one billion, two hundred sixty-eight million, nineteen thousand, five hundred twelve".