1268273878 has 16 divisors (see below), whose sum is σ = 1978900560. Its totient is φ = 608882400.

The previous prime is 1268273873. The next prime is 1268273927. The reversal of 1268273878 is 8783728621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268273873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49908 + ... + 70903.

It is an arithmetic number, because the mean of its divisors is an integer number (123681285).

Almost surely, 2^1268273878 is an apocalyptic number.

1268273878 is a deficient number, since it is larger than the sum of its proper divisors (710626682).

1268273878 is a wasteful number, since it uses less digits than its factorization.

1268273878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121023.

The product of its digits is 1806336, while the sum is 52.

The square root of 1268273878 is about 35612.8330521457. The cubic root of 1268273878 is about 1082.4412875580.

The spelling of 1268273878 in words is "one billion, two hundred sixty-eight million, two hundred seventy-three thousand, eight hundred seventy-eight".