1678163432 has 64 divisors (see below), whose sum is σ = 3696321600. Its totient is φ = 705725440.

The previous prime is 1678163419. The next prime is 1678163437. The reversal of 1678163432 is 2343618761.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1678163432.

It is not an unprimeable number, because it can be changed into a prime (1678163437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78758 + ... + 97770.

It is an arithmetic number, because the mean of its divisors is an integer number (57755025).

Almost surely, 2^1678163432 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 1678163432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848160800).

1678163432 is an abundant number, since it is smaller than the sum of its proper divisors (2018158168).

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

1678163432 is a wasteful number, since it uses less digits than its factorization.

1678163432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19106 (or 19102 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 1678163432 is about 40965.3931019830. The cubic root of 1678163432 is about 1188.3510414576.

The spelling of 1678163432 in words is "one billion, six hundred seventy-eight million, one hundred sixty-three thousand, four hundred thirty-two".