5678161944 has 256 divisors, whose sum is σ = 18044544000. Its totient is φ = 1479389184.

The previous prime is 5678161897. The next prime is 5678161949. The reversal of 5678161944 is 4491618765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5678161949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10380279 + ... + 10380825.

It is an arithmetic number, because the mean of its divisors is an integer number (70486500).

Almost surely, 2^5678161944 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 5678161944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9022272000).

5678161944 is an abundant number, since it is smaller than the sum of its proper divisors (12366382056).

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

5678161944 is a wasteful number, since it uses less digits than its factorization.

5678161944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 669 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 5678161944 is about 75353.5795035644. The cubic root of 5678161944 is about 1784.0318009641.

The spelling of 5678161944 in words is "five billion, six hundred seventy-eight million, one hundred sixty-one thousand, nine hundred forty-four".