1278968902 has 8 divisors (see below), whose sum is σ = 1919386800. Its totient is φ = 639173304.

The previous prime is 1278968857. The next prime is 1278968969. The reversal of 1278968902 is 2098698721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1278968902² = 3271522904566171208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1278968902.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 150402 + ... + 158677.

It is an arithmetic number, because the mean of its divisors is an integer number (239923350).

Almost surely, 2^1278968902 is an apocalyptic number.

1278968902 is a deficient number, since it is larger than the sum of its proper divisors (640417898).

1278968902 is a wasteful number, since it uses less digits than its factorization.

1278968902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311150.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 1278968902 is about 35762.6747042220. The cubic root of 1278968902 is about 1085.4754234671.

The spelling of 1278968902 in words is "one billion, two hundred seventy-eight million, nine hundred sixty-eight thousand, nine hundred two".