538590388644 has 192 divisors, whose sum is σ = 1745165721600. Its totient is φ = 139550688000.

The previous prime is 538590388603. The next prime is 538590388649. The reversal of 538590388644 is 446883095835.

It is a happy number.

538590388644 is a `hidden beast` number, since 5 + 3 + 8 + 590 + 38 + 8 + 6 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (538590388649) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3322069 + ... + 3480419.

It is an arithmetic number, because the mean of its divisors is an integer number (9089404800).

Almost surely, 2^538590388644 is an apocalyptic number.

538590388644 is a gapful number since it is divisible by the number (54) 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 538590388644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872582860800).

538590388644 is an abundant number, since it is smaller than the sum of its proper divisors (1206575332956).

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

538590388644 is a wasteful number, since it uses less digits than its factorization.

538590388644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158791 (or 158783 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 538590388644 in words is "five hundred thirty-eight billion, five hundred ninety million, three hundred eighty-eight thousand, six hundred forty-four".