3858738840 has 192 divisors, whose sum is σ = 14153162400. Its totient is φ = 903168000.

The previous prime is 3858738833. The next prime is 3858738841. The reversal of 3858738840 is 488378583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858738841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98040 + ... + 131640.

Almost surely, 2^3858738840 is an apocalyptic number.

3858738840 is a gapful number since it is divisible by the number (30) 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 3858738840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7076581200).

3858738840 is an abundant number, since it is smaller than the sum of its proper divisors (10294423560).

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

3858738840 is a wasteful number, since it uses less digits than its factorization.

3858738840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33658 (or 33651 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The square root of 3858738840 is about 62118.7478946574. The cubic root of 3858738840 is about 1568.4901492005.

The spelling of 3858738840 in words is "three billion, eight hundred fifty-eight million, seven hundred thirty-eight thousand, eight hundred forty".