2538344049381 has 24 divisors (see below), whose sum is σ = 4229443767744. Its totient is φ = 1436926400640.

The previous prime is 2538344049377. The next prime is 2538344049383. The reversal of 2538344049381 is 1839404438352.

2538344049381 is a `hidden beast` number, since 2 + 5 + 3 + 8 + 34 + 40 + 493 + 81 = 666.

It is not a de Polignac number, because 2538344049381 - 2² = 2538344049377 is a prime.

It is a super-2 number, since 2×2538344049381² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538344049383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188269780 + ... + 188283261.

It is an arithmetic number, because the mean of its divisors is an integer number (176226823656).

Almost surely, 2^{2538344049381} is an apocalyptic number.

2538344049381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2538344049381 is a deficient number, since it is larger than the sum of its proper divisors (1691099718363).

2538344049381 is a wasteful number, since it uses less digits than its factorization.

2538344049381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376553161 (or 376553158 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 2538344049381 in words is "two trillion, five hundred thirty-eight billion, three hundred forty-four million, forty-nine thousand, three hundred eighty-one".