1538381299224 has 384 divisors, whose sum is σ = 4961918545920. Its totient is φ = 386109504000.

The previous prime is 1538381299177. The next prime is 1538381299229. The reversal of 1538381299224 is 4229921838351.

It is a Cunningham number, because it is equal to 1240315²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538381299229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 382014699 + ... + 382018725.

It is an arithmetic number, because the mean of its divisors is an integer number (12921662880).

Almost surely, 2^{1538381299224} is an apocalyptic number.

1538381299224 is a gapful number since it is divisible by the number (14) 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 1538381299224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480959272960).

1538381299224 is an abundant number, since it is smaller than the sum of its proper divisors (3423537246696).

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

1538381299224 is a wasteful number, since it uses less digits than its factorization.

1538381299224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4238 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 1538381299224 in words is "one trillion, five hundred thirty-eight billion, three hundred eighty-one million, two hundred ninety-nine thousand, two hundred twenty-four".