1938628608 has 224 divisors, whose sum is σ = 6039429120. Its totient is φ = 541655040.

The previous prime is 1938628607. The next prime is 1938628633. The reversal of 1938628608 is 8068268391.

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (1938628607) 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, 10149793 + ... + 10149983.

Almost surely, 2^1938628608 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 1938628608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3019714560).

1938628608 is an abundant number, since it is smaller than the sum of its proper divisors (4100800512).

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

1938628608 is an equidigital number, since it uses as much as digits as its factorization.

1938628608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1938628608 is about 44029.8604131333. The cubic root of 1938628608 is about 1246.8997535076.

The spelling of 1938628608 in words is "one billion, nine hundred thirty-eight million, six hundred twenty-eight thousand, six hundred eight".