16238413 has 2 divisors, whose sum is σ = 16238414. Its totient is φ = 16238412.

The previous prime is 16238401. The next prime is 16238423. The reversal of 16238413 is 31483261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14607684 + 1630729 = 3822^2 + 1277^2 .

It is an emirp because it is prime and its reverse (31483261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16238413 - 2⁵ = 16238381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16238423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8119206 + 8119207.

It is an arithmetic number, because the mean of its divisors is an integer number (8119207).

Almost surely, 2^16238413 is an apocalyptic number.

It is an amenable number.

16238413 is a deficient number, since it is larger than the sum of its proper divisors (1).

16238413 is an equidigital number, since it uses as much as digits as its factorization.

16238413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 16238413 is about 4029.6914273924. The cubic root of 16238413 is about 253.2296341890.

The spelling of 16238413 in words is "sixteen million, two hundred thirty-eight thousand, four hundred thirteen".