1678219473860 has 48 divisors (see below), whose sum is σ = 3851943621120. Its totient is φ = 611419614720.

The previous prime is 1678219473823. The next prime is 1678219473893. The reversal of 1678219473860 is 683749128761.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 1678219473793 and 1678219473802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79601390 + ... + 79622469.

It is an arithmetic number, because the mean of its divisors is an integer number (80248825440).

Almost surely, 2^{1678219473860} is an apocalyptic number.

1678219473860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1678219473860 is an abundant number, since it is smaller than the sum of its proper divisors (2173724147260).

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

1678219473860 is a wasteful number, since it uses less digits than its factorization.

1678219473860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159223916 (or 159223914 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 1678219473860 in words is "one trillion, six hundred seventy-eight billion, two hundred nineteen million, four hundred seventy-three thousand, eight hundred sixty".