1678084354 has 4 divisors (see below), whose sum is σ = 2517126534. Its totient is φ = 839042176.

The previous prime is 1678084307. The next prime is 1678084363. The reversal of 1678084354 is 4534808761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4534808761 = 7 ⋅647829823.

It can be written as a sum of positive squares in only one way, i.e., 859838329 + 818246025 = 29323^2 + 28605^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419521087 + ... + 419521090.

Almost surely, 2^1678084354 is an apocalyptic number.

1678084354 is a deficient number, since it is larger than the sum of its proper divisors (839042180).

1678084354 is an equidigital number, since it uses as much as digits as its factorization.

1678084354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839042179.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 1678084354 is about 40964.4279100783. The cubic root of 1678084354 is about 1188.3323754369.

The spelling of 1678084354 in words is "one billion, six hundred seventy-eight million, eighty-four thousand, three hundred fifty-four".