13681838402 has 16 divisors (see below), whose sum is σ = 21627311040. Its totient is φ = 6473548368.

The previous prime is 13681838389. The next prime is 13681838407. The reversal of 13681838402 is 20483818631.

It is not an unprimeable number, because it can be changed into a prime (13681838407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169253 + ... + 236664.

It is an arithmetic number, because the mean of its divisors is an integer number (1351706940).

Almost surely, 2^13681838402 is an apocalyptic number.

13681838402 is a deficient number, since it is larger than the sum of its proper divisors (7945472638).

13681838402 is a wasteful number, since it uses less digits than its factorization.

13681838402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406825.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 13681838402 in words is "thirteen billion, six hundred eighty-one million, eight hundred thirty-eight thousand, four hundred two".