13631389038 has 96 divisors (see below), whose sum is σ = 32146118784. Its totient is φ = 4158176256.

The previous prime is 13631389019. The next prime is 13631389097. The reversal of 13631389038 is 83098313631.

13631389038 is a `hidden beast` number, since 1 + 3 + 631 + 3 + 8 + 9 + 0 + 3 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13631388984 and 13631389002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2254956 + ... + 2260992.

It is an arithmetic number, because the mean of its divisors is an integer number (334855404).

Almost surely, 2^13631389038 is an apocalyptic number.

13631389038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13631389038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16073059392).

13631389038 is an abundant number, since it is smaller than the sum of its proper divisors (18514729746).

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

13631389038 is a wasteful number, since it uses less digits than its factorization.

13631389038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266 (or 6263 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 13631389038 in words is "thirteen billion, six hundred thirty-one million, three hundred eighty-nine thousand, thirty-eight".