13738681 has 8 divisors (see below), whose sum is σ = 15242400. Its totient is φ = 12277440.

The previous prime is 13738667. The next prime is 13738717. The reversal of 13738681 is 18683731.

13738681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13738681 is a prime.

It is a super-2 number, since 2×13738681² = 377502711239522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13738681.

It is not an unprimeable number, because it can be changed into a prime (13739681) 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, 9936 + ... + 11233.

It is an arithmetic number, because the mean of its divisors is an integer number (1905300).

Almost surely, 2^13738681 is an apocalyptic number.

13738681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13738681 is a deficient number, since it is larger than the sum of its proper divisors (1503719).

13738681 is a wasteful number, since it uses less digits than its factorization.

13738681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21239.

The product of its digits is 24192, while the sum is 37.

The square root of 13738681 is about 3706.5726756668. The cubic root of 13738681 is about 239.5052365259.

The spelling of 13738681 in words is "thirteen million, seven hundred thirty-eight thousand, six hundred eighty-one".