1268287948 has 6 divisors (see below), whose sum is σ = 2219503916. Its totient is φ = 634143972.

The previous prime is 1268287939. The next prime is 1268287963. The reversal of 1268287948 is 8497828621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158535990 + ... + 158535997.

Almost surely, 2^1268287948 is an apocalyptic number.

It is an amenable number.

1268287948 is a deficient number, since it is larger than the sum of its proper divisors (951215968).

1268287948 is a wasteful number, since it uses less digits than its factorization.

1268287948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317071991 (or 317071989 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 1268287948 is about 35613.0305927479. The cubic root of 1268287948 is about 1082.4452903455.

The spelling of 1268287948 in words is "one billion, two hundred sixty-eight million, two hundred eighty-seven thousand, nine hundred forty-eight".