1278012108 has 48 divisors (see below), whose sum is σ = 3052256256. Its totient is φ = 416045760.

The previous prime is 1278012103. The next prime is 1278012119. The reversal of 1278012108 is 8012108721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1278012103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137323 + ... + 146333.

It is an arithmetic number, because the mean of its divisors is an integer number (63588672).

Almost surely, 2^1278012108 is an apocalyptic number.

It is an amenable number.

1278012108 is an abundant number, since it is smaller than the sum of its proper divisors (1774244148).

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

1278012108 is a wasteful number, since it uses less digits than its factorization.

1278012108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294 (or 9292 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 1278012108 is about 35749.2952098360. The cubic root of 1278012108 is about 1085.2046752980.

The spelling of 1278012108 in words is "one billion, two hundred seventy-eight million, twelve thousand, one hundred eight".