1334666778 has 16 divisors (see below), whose sum is σ = 2673966720. Its totient is φ = 444116736.

The previous prime is 1334666759. The next prime is 1334666783. The reversal of 1334666778 is 8776664331.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1334666778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189298 + ... + 196221.

It is an arithmetic number, because the mean of its divisors is an integer number (167122920).

Almost surely, 2^1334666778 is an apocalyptic number.

1334666778 is an abundant number, since it is smaller than the sum of its proper divisors (1339299942).

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

1334666778 is a wasteful number, since it uses less digits than its factorization.

1334666778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386101.

The product of its digits is 3048192, while the sum is 51.

The square root of 1334666778 is about 36533.0915472534. The cubic root of 1334666778 is about 1101.0092054921.

The spelling of 1334666778 in words is "one billion, three hundred thirty-four million, six hundred sixty-six thousand, seven hundred seventy-eight".