1678889124 has 72 divisors (see below), whose sum is σ = 4638422880. Its totient is φ = 507792000.

The previous prime is 1678889123. The next prime is 1678889137. The reversal of 1678889124 is 4219888761.

It is not an unprimeable number, because it can be changed into a prime (1678889123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221599 + ... + 229049.

It is an arithmetic number, because the mean of its divisors is an integer number (64422540).

Almost surely, 2^1678889124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1678889124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319211440).

1678889124 is an abundant number, since it is smaller than the sum of its proper divisors (2959533756).

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

1678889124 is a wasteful number, since it uses less digits than its factorization.

1678889124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041 (or 8036 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The square root of 1678889124 is about 40974.2495233287. The cubic root of 1678889124 is about 1188.5223105467.

The spelling of 1678889124 in words is "one billion, six hundred seventy-eight million, eight hundred eighty-nine thousand, one hundred twenty-four".