3138542550 has 576 divisors, whose sum is σ = 11114288640. Its totient is φ = 622080000.

The previous prime is 3138542521. The next prime is 3138542551. The reversal of 3138542550 is 552458313.

3138542550 is a `hidden beast` number, since 31 + 38 + 5 + 42 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138542551) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 20784975 + ... + 20785125.

It is an arithmetic number, because the mean of its divisors is an integer number (19295640).

Almost surely, 2^3138542550 is an apocalyptic number.

3138542550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138542550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5557144320).

3138542550 is an abundant number, since it is smaller than the sum of its proper divisors (7975746090).

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

3138542550 is a wasteful number, since it uses less digits than its factorization.

3138542550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 3138542550 is about 56022.6967398036. The cubic root of 3138542550 is about 1464.1177540105.

The spelling of 3138542550 in words is "three billion, one hundred thirty-eight million, five hundred forty-two thousand, five hundred fifty".