13692381 has 8 divisors (see below), whose sum is σ = 18279744. Its totient is φ = 9116640.

The previous prime is 13692347. The next prime is 13692409. The reversal of 13692381 is 18329631.

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

It is not a de Polignac number, because 13692381 - 2⁹ = 13691869 is a prime.

It is a super-2 number, since 2×13692381² = 374962594898322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13692311) 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, 376 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (2284968).

Almost surely, 2^13692381 is an apocalyptic number.

It is an amenable number.

13692381 is a deficient number, since it is larger than the sum of its proper divisors (4587363).

13692381 is an equidigital number, since it uses as much as digits as its factorization.

13692381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811.

The product of its digits is 7776, while the sum is 33.

The square root of 13692381 is about 3700.3217427678. The cubic root of 13692381 is about 239.2358857600.

The spelling of 13692381 in words is "thirteen million, six hundred ninety-two thousand, three hundred eighty-one".