1278518468 has 12 divisors (see below), whose sum is σ = 2237706240. Its totient is φ = 639173832.

The previous prime is 1278518453. The next prime is 1278518543. The reversal of 1278518468 is 8648158721.

It is a super-3 number, since 3×1278518468³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22205 + ... + 55227.

It is an arithmetic number, because the mean of its divisors is an integer number (186475520).

Almost surely, 2^1278518468 is an apocalyptic number.

It is an amenable number.

1278518468 is a deficient number, since it is larger than the sum of its proper divisors (959187772).

1278518468 is a wasteful number, since it uses less digits than its factorization.

1278518468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42706 (or 42704 counting only the distinct ones).

The product of its digits is 860160, while the sum is 50.

The square root of 1278518468 is about 35756.3766061384. The cubic root of 1278518468 is about 1085.3479790218.

The spelling of 1278518468 in words is "one billion, two hundred seventy-eight million, five hundred eighteen thousand, four hundred sixty-eight".