13836981 has 8 divisors (see below), whose sum is σ = 18517024. Its totient is φ = 9190800.

The previous prime is 13836971. The next prime is 13837009. The reversal of 13836981 is 18963831.

13836981 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 13836981 - 2¹⁵ = 13804213 is a prime.

It is a super-2 number, since 2×13836981² = 382924086388722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13836971) 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, 7495 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (2314628).

Almost surely, 2^13836981 is an apocalyptic number.

It is an amenable number.

13836981 is a deficient number, since it is larger than the sum of its proper divisors (4680043).

13836981 is a wasteful number, since it uses less digits than its factorization.

13836981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16931.

The product of its digits is 31104, while the sum is 39.

The square root of 13836981 is about 3719.8092693040. The cubic root of 13836981 is about 240.0750980265.

The spelling of 13836981 in words is "thirteen million, eight hundred thirty-six thousand, nine hundred eighty-one".