1268933979154 has 8 divisors (see below), whose sum is σ = 1903434700860. Its totient is φ = 634455745536.

The previous prime is 1268933979149. The next prime is 1268933979191. The reversal of 1268933979154 is 4519793398621.

It can be written as a sum of positive squares in 2 ways, for example, as 1237400388225 + 31533590929 = 1112385^2 + 177577^2 .

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

It is a super-2 number, since 2×1268933979154² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1268933979154.

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, 5480239 + ... + 5707090.

Almost surely, 2^{1268933979154} is an apocalyptic number.

1268933979154 is a deficient number, since it is larger than the sum of its proper divisors (634500721706).

1268933979154 is a wasteful number, since it uses less digits than its factorization.

1268933979154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244044.

The product of its digits is 88179840, while the sum is 67.

The spelling of 1268933979154 in words is "one trillion, two hundred sixty-eight billion, nine hundred thirty-three million, nine hundred seventy-nine thousand, one hundred fifty-four".