1678210047 has 12 divisors (see below), whose sum is σ = 2433029664. Its totient is φ = 1114676640.

The previous prime is 1678210033. The next prime is 1678210057. The reversal of 1678210047 is 7400128761.

It is not a de Polignac number, because 1678210047 - 2¹⁵ = 1678177279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1678209993 and 1678210020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678210057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341598 + ... + 346475.

It is an arithmetic number, because the mean of its divisors is an integer number (202752472).

Almost surely, 2^1678210047 is an apocalyptic number.

1678210047 is a deficient number, since it is larger than the sum of its proper divisors (754819617).

1678210047 is a wasteful number, since it uses less digits than its factorization.

1678210047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688350 (or 688347 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1678210047 is about 40965.9620538808. The cubic root of 1678210047 is about 1188.3620444524.

The spelling of 1678210047 in words is "one billion, six hundred seventy-eight million, two hundred ten thousand, forty-seven".