1278799914 has 32 divisors (see below), whose sum is σ = 2930843520. Its totient is φ = 364387392.

The previous prime is 1278799909. The next prime is 1278799927. The reversal of 1278799914 is 4199978721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25149 + ... + 56480.

It is an arithmetic number, because the mean of its divisors is an integer number (91588860).

Almost surely, 2^1278799914 is an apocalyptic number.

1278799914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1278799914 is an abundant number, since it is smaller than the sum of its proper divisors (1652043606).

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

1278799914 is a wasteful number, since it uses less digits than its factorization.

1278799914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82014.

The product of its digits is 2286144, while the sum is 57.

The square root of 1278799914 is about 35760.3119952833. The cubic root of 1278799914 is about 1085.4276140168.

The spelling of 1278799914 in words is "one billion, two hundred seventy-eight million, seven hundred ninety-nine thousand, nine hundred fourteen".