13918537 has 8 divisors (see below), whose sum is σ = 14157000. Its totient is φ = 13682304.

The previous prime is 13918523. The next prime is 13918547. The reversal of 13918537 is 73581931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3575881 + 10342656 = 1891^2 + 3216^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13918537 - 2⁷ = 13918409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13918496 and 13918505.

It is not an unprimeable number, because it can be changed into a prime (13918547) 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, 15813 + ... + 16669.

It is an arithmetic number, because the mean of its divisors is an integer number (1769625).

Almost surely, 2^13918537 is an apocalyptic number.

It is an amenable number.

13918537 is a deficient number, since it is larger than the sum of its proper divisors (238463).

13918537 is a wasteful number, since it uses less digits than its factorization.

13918537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its digits is 22680, while the sum is 37.

The square root of 13918537 is about 3730.7555535039. The cubic root of 13918537 is about 240.5458467265.

The spelling of 13918537 in words is "thirteen million, nine hundred eighteen thousand, five hundred thirty-seven".