3851388640 has 96 divisors (see below), whose sum is σ = 10357756416. Its totient is φ = 1339599360.

The previous prime is 3851388599. The next prime is 3851388689. The reversal of 3851388640 is 468831583.

3851388640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7092 + ... + 88051.

It is an arithmetic number, because the mean of its divisors is an integer number (107893296).

Almost surely, 2^3851388640 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 3851388640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5178878208).

3851388640 is an abundant number, since it is smaller than the sum of its proper divisors (6506367776).

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

3851388640 is a wasteful number, since it uses less digits than its factorization.

3851388640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95192 (or 95184 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 3851388640 is about 62059.5572011274. The cubic root of 3851388640 is about 1567.4936194560.

The spelling of 3851388640 in words is "three billion, eight hundred fifty-one million, three hundred eighty-eight thousand, six hundred forty".