3855540000 has 240 divisors, whose sum is σ = 13622539392. Its totient is φ = 948864000.

The previous prime is 3855539969. The next prime is 3855540037. The reversal of 3855540000 is 455583.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 3855540000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 777529 + ... + 782471.

Almost surely, 2^3855540000 is an apocalyptic number.

3855540000 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 3855540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6811269696).

3855540000 is an abundant number, since it is smaller than the sum of its proper divisors (9766999392).

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

3855540000 is a wasteful number, since it uses less digits than its factorization.

3855540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 3855540000 is about 62092.9947739679. The cubic root of 3855540000 is about 1568.0566106522.

Adding to 3855540000 its reverse (455583), we get a palindrome (3855995583).

The spelling of 3855540000 in words is "three billion, eight hundred fifty-five million, five hundred forty thousand".