13993418549 has 8 divisors (see below), whose sum is σ = 15272503392. Its totient is φ = 12715493040.

The previous prime is 13993418521. The next prime is 13993418557. The reversal of 13993418549 is 94581439931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13993418549 - 2¹² = 13993414453 is a prime.

It is a super-3 number, since 3×13993418549³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13993418494 and 13993418503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993418149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264494 + ... + 312959.

It is an arithmetic number, because the mean of its divisors is an integer number (1909062924).

Almost surely, 2^13993418549 is an apocalyptic number.

It is an amenable number.

13993418549 is a deficient number, since it is larger than the sum of its proper divisors (1279084843).

13993418549 is a wasteful number, since it uses less digits than its factorization.

13993418549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579667.

The product of its digits is 4199040, while the sum is 56.

The spelling of 13993418549 in words is "thirteen billion, nine hundred ninety-three million, four hundred eighteen thousand, five hundred forty-nine".