13683049442 has 4 divisors (see below), whose sum is σ = 20524574166. Its totient is φ = 6841524720.

The previous prime is 13683049441. The next prime is 13683049453. The reversal of 13683049442 is 24494038631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24494038631 = 1237 ⋅19801163.

It can be written as a sum of positive squares in only one way, i.e., 12463712881 + 1219336561 = 111641^2 + 34919^2 .

It is a super-2 number, since 2×13683049442² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13683049393 and 13683049402.

It is not an unprimeable number, because it can be changed into a prime (13683049441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420762359 + ... + 3420762362.

Almost surely, 2^13683049442 is an apocalyptic number.

13683049442 is a deficient number, since it is larger than the sum of its proper divisors (6841524724).

13683049442 is an equidigital number, since it uses as much as digits as its factorization.

13683049442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841524723.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 13683049442 in words is "thirteen billion, six hundred eighty-three million, forty-nine thousand, four hundred forty-two".