6138532500 has 120 divisors (see below), whose sum is σ = 17953453056. Its totient is φ = 1631904000.

The previous prime is 6138532469. The next prime is 6138532507. The reversal of 6138532500 is 52358316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138532507) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2871432 + ... + 2873568.

Almost surely, 2^6138532500 is an apocalyptic number.

6138532500 is a gapful number since it is divisible by the number (60) 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 6138532500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8976726528).

6138532500 is an abundant number, since it is smaller than the sum of its proper divisors (11814920556).

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

6138532500 is a wasteful number, since it uses less digits than its factorization.

6138532500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2530 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6138532500 is about 78348.7874826407. The cubic root of 6138532500 is about 1830.9993347372. Note that the first 3 decimals are identical.

The spelling of 6138532500 in words is "six billion, one hundred thirty-eight million, five hundred thirty-two thousand, five hundred".