1314381778 has 8 divisors (see below), whose sum is σ = 1972407168. Its totient is φ = 656912724.

The previous prime is 1314381773. The next prime is 1314381779. The reversal of 1314381778 is 8771834131.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1314381773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133126 + ... + 142657.

It is an arithmetic number, because the mean of its divisors is an integer number (246550896).

Almost surely, 2^1314381778 is an apocalyptic number.

1314381778 is a deficient number, since it is larger than the sum of its proper divisors (658025390).

1314381778 is a wasteful number, since it uses less digits than its factorization.

1314381778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278168.

The product of its digits is 112896, while the sum is 43.

The square root of 1314381778 is about 36254.4035670151. The cubic root of 1314381778 is about 1095.4027911495.

The spelling of 1314381778 in words is "one billion, three hundred fourteen million, three hundred eighty-one thousand, seven hundred seventy-eight".