16138441 has 4 divisors (see below), whose sum is σ = 17605584. Its totient is φ = 14671300.

The previous prime is 16138403. The next prime is 16138477. The reversal of 16138441 is 14483161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16138441 - 2⁷ = 16138313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16138481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733555 + ... + 733576.

It is an arithmetic number, because the mean of its divisors is an integer number (4401396).

Almost surely, 2^16138441 is an apocalyptic number.

16138441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16138441 is a deficient number, since it is larger than the sum of its proper divisors (1467143).

16138441 is a wasteful number, since it uses less digits than its factorization.

16138441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467142.

The product of its digits is 2304, while the sum is 28.

The square root of 16138441 is about 4017.2678526581. The cubic root of 16138441 is about 252.7088935658.

The spelling of 16138441 in words is "sixteen million, one hundred thirty-eight thousand, four hundred forty-one".