1278849468 has 24 divisors (see below), whose sum is σ = 3213519568. Its totient is φ = 393492096.

The previous prime is 1278849457. The next prime is 1278849499. The reversal of 1278849468 is 8649488721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4098721 + ... + 4099032.

Almost surely, 2^1278849468 is an apocalyptic number.

It is an amenable number.

1278849468 is an abundant number, since it is smaller than the sum of its proper divisors (1934670100).

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

1278849468 is a wasteful number, since it uses less digits than its factorization.

1278849468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8197773 (or 8197771 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 57.

The square root of 1278849468 is about 35761.0048516537. The cubic root of 1278849468 is about 1085.4416340848.

The spelling of 1278849468 in words is "one billion, two hundred seventy-eight million, eight hundred forty-nine thousand, four hundred sixty-eight".