16181423 has 2 divisors, whose sum is σ = 16181424. Its totient is φ = 16181422.

The previous prime is 16181413. The next prime is 16181437. The reversal of 16181423 is 32418161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16181423 - 2⁶ = 16181359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16181392 and 16181401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16181413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8090711 + 8090712.

It is an arithmetic number, because the mean of its divisors is an integer number (8090712).

Almost surely, 2^16181423 is an apocalyptic number.

16181423 is a deficient number, since it is larger than the sum of its proper divisors (1).

16181423 is an equidigital number, since it uses as much as digits as its factorization.

16181423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 16181423 is about 4022.6139511517. The cubic root of 16181423 is about 252.9330437782.

Adding to 16181423 its reverse (32418161), we get a palindrome (48599584).

The spelling of 16181423 in words is "sixteen million, one hundred eighty-one thousand, four hundred twenty-three".