1427334378 has 16 divisors (see below), whose sum is σ = 3004914720. Its totient is φ = 450737136.

The previous prime is 1427334289. The next prime is 1427334413. The reversal of 1427334378 is 8734337241.

It is a happy number.

It is a Curzon number.

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, 6260125 + ... + 6260352.

It is an arithmetic number, because the mean of its divisors is an integer number (187807170).

Almost surely, 2^1427334378 is an apocalyptic number.

1427334378 is an abundant number, since it is smaller than the sum of its proper divisors (1577580342).

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

1427334378 is a wasteful number, since it uses less digits than its factorization.

1427334378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520501.

The product of its digits is 338688, while the sum is 42.

The square root of 1427334378 is about 37780.0791158515. The cubic root of 1427334378 is about 1125.9227005943.

The spelling of 1427334378 in words is "one billion, four hundred twenty-seven million, three hundred thirty-four thousand, three hundred seventy-eight".