1278445068 has 36 divisors (see below), whose sum is σ = 3232983208. Its totient is φ = 425969280.

The previous prime is 1278445037. The next prime is 1278445079. The reversal of 1278445068 is 8605448721.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100980 + ... + 112932.

Almost surely, 2^1278445068 is an apocalyptic number.

1278445068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1278445068 is an abundant number, since it is smaller than the sum of its proper divisors (1954538140).

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

1278445068 is a wasteful number, since it uses less digits than its factorization.

1278445068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14934 (or 14929 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1278445068 is about 35755.3502010538. The cubic root of 1278445068 is about 1085.3272086098.

The spelling of 1278445068 in words is "one billion, two hundred seventy-eight million, four hundred forty-five thousand, sixty-eight".