13684449474 has 32 divisors (see below), whose sum is σ = 31390855680. Its totient is φ = 4414338000.

The previous prime is 13684449367. The next prime is 13684449479. The reversal of 13684449474 is 47494448631.

It is a happy number.

13684449474 is a `hidden beast` number, since 1 + 3 + 6 + 84 + 4 + 494 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 13684449474.

It is not an unprimeable number, because it can be changed into a prime (13684449479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4085677 + ... + 4089024.

It is an arithmetic number, because the mean of its divisors is an integer number (980964240).

Almost surely, 2^13684449474 is an apocalyptic number.

13684449474 is an abundant number, since it is smaller than the sum of its proper divisors (17706406206).

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

13684449474 is a wasteful number, since it uses less digits than its factorization.

13684449474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174743 (or 8174737 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 13684449474 in words is "thirteen billion, six hundred eighty-four million, four hundred forty-nine thousand, four hundred seventy-four".