16138823 has 2 divisors, whose sum is σ = 16138824. Its totient is φ = 16138822.

The previous prime is 16138799. The next prime is 16138841. The reversal of 16138823 is 32883161.

It is a happy number.

16138823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16138823 - 2¹⁰ = 16137799 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16138823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16138523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8069411 + 8069412.

It is an arithmetic number, because the mean of its divisors is an integer number (8069412).

Almost surely, 2^16138823 is an apocalyptic number.

16138823 is a deficient number, since it is larger than the sum of its proper divisors (1).

16138823 is an equidigital number, since it uses as much as digits as its factorization.

16138823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 16138823 is about 4017.3153971278. The cubic root of 16138823 is about 252.7108874395.

It can be divided in two parts, 16138 and 823, that added together give a palindrome (16961).

The spelling of 16138823 in words is "sixteen million, one hundred thirty-eight thousand, eight hundred twenty-three".