16438541 has 8 divisors (see below), whose sum is σ = 19892160. Its totient is φ = 13261248.

The previous prime is 16438531. The next prime is 16438547. The reversal of 16438541 is 14583461.

16438541 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 16438541 - 2¹⁸ = 16176397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16438498 and 16438507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16438547) 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, 68951 + ... + 69188.

It is an arithmetic number, because the mean of its divisors is an integer number (2486520).

Almost surely, 2^16438541 is an apocalyptic number.

It is an amenable number.

16438541 is a deficient number, since it is larger than the sum of its proper divisors (3453619).

16438541 is a wasteful number, since it uses less digits than its factorization.

16438541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138163.

The product of its digits is 11520, while the sum is 32.

The square root of 16438541 is about 4054.4470646440. The cubic root of 16438541 is about 254.2656870232.

The spelling of 16438541 in words is "sixteen million, four hundred thirty-eight thousand, five hundred forty-one".