1678344078 has 8 divisors (see below), whose sum is σ = 3356688168. Its totient is φ = 559448024.

The previous prime is 1678344077. The next prime is 1678344089. The reversal of 1678344078 is 8704438761.

1678344078 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1678344078 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678344071) 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, 139862001 + ... + 139862012.

It is an arithmetic number, because the mean of its divisors is an integer number (419586021).

Almost surely, 2^1678344078 is an apocalyptic number.

1678344078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1678344078 is a wasteful number, since it uses less digits than its factorization.

1678344078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279724018.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 1678344078 is about 40967.5979037092. The cubic root of 1678344078 is about 1188.3936799666.

The spelling of 1678344078 in words is "one billion, six hundred seventy-eight million, three hundred forty-four thousand, seventy-eight".