1938839616 has 168 divisors, whose sum is σ = 6456176064. Its totient is φ = 544803840.

The previous prime is 1938839597. The next prime is 1938839653. The reversal of 1938839616 is 6169388391.

1938839616 is a `hidden beast` number, since 19 + 3 + 8 + 8 + 3 + 9 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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, 242011 + ... + 249893.

Almost surely, 2^1938839616 is an apocalyptic number.

1938839616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1938839616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3228088032).

1938839616 is an abundant number, since it is smaller than the sum of its proper divisors (4517336448).

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

1938839616 is a wasteful number, since it uses less digits than its factorization.

1938839616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969 (or 7956 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1938839616 is about 44032.2565399503. The cubic root of 1938839616 is about 1246.9449910322.

The spelling of 1938839616 in words is "one billion, nine hundred thirty-eight million, eight hundred thirty-nine thousand, six hundred sixteen".