13538941549 has 32 divisors (see below), whose sum is σ = 16527974400. Its totient is φ = 10832693760.

The previous prime is 13538941541. The next prime is 13538941597. The reversal of 13538941549 is 94514983531.

It is not a de Polignac number, because 13538941549 - 2³ = 13538941541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13538941496 and 13538941505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538941541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3081144 + ... + 3085534.

It is an arithmetic number, because the mean of its divisors is an integer number (516499200).

Almost surely, 2^13538941549 is an apocalyptic number.

13538941549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13538941549 is a deficient number, since it is larger than the sum of its proper divisors (2989032851).

13538941549 is a wasteful number, since it uses less digits than its factorization.

13538941549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753.

The product of its digits is 2332800, while the sum is 52.

The spelling of 13538941549 in words is "thirteen billion, five hundred thirty-eight million, nine hundred forty-one thousand, five hundred forty-nine".