1368807878 has 32 divisors (see below), whose sum is σ = 2222760960. Its totient is φ = 630527040.

The previous prime is 1368807871. The next prime is 1368807893. The reversal of 1368807878 is 8787088631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368807871) 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, 144401 + ... + 153587.

It is an arithmetic number, because the mean of its divisors is an integer number (69461280).

Almost surely, 2^1368807878 is an apocalyptic number.

1368807878 is a deficient number, since it is larger than the sum of its proper divisors (853953082).

1368807878 is a wasteful number, since it uses less digits than its factorization.

1368807878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332.

The product of its (nonzero) digits is 3612672, while the sum is 56.

The square root of 1368807878 is about 36997.4036656628. The cubic root of 1368807878 is about 1110.3183022440.

The spelling of 1368807878 in words is "one billion, three hundred sixty-eight million, eight hundred seven thousand, eight hundred seventy-eight".