1278082160 has 20 divisors (see below), whose sum is σ = 2971541208. Its totient is φ = 511232832.

The previous prime is 1278082159. The next prime is 1278082199. The reversal of 1278082160 is 612808721.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1278082160.

It is a congruent number.

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, 7987934 + ... + 7988093.

Almost surely, 2^1278082160 is an apocalyptic number.

1278082160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1278082160 is an abundant number, since it is smaller than the sum of its proper divisors (1693459048).

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

1278082160 is a wasteful number, since it uses less digits than its factorization.

1278082160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15976040 (or 15976034 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1278082160 is about 35750.2749639775. The cubic root of 1278082160 is about 1085.2245028016.

The spelling of 1278082160 in words is "one billion, two hundred seventy-eight million, eighty-two thousand, one hundred sixty".