16238401 has 2 divisors, whose sum is σ = 16238402. Its totient is φ = 16238400.

The previous prime is 16238399. The next prime is 16238413. The reversal of 16238401 is 10483261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16008001 + 230400 = 4001^2 + 480^2 .

It is an emirp because it is prime and its reverse (10483261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16238401 - 2¹ = 16238399 is a prime.

Together with 16238399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16238461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8119200 + 8119201.

It is an arithmetic number, because the mean of its divisors is an integer number (8119201).

Almost surely, 2^16238401 is an apocalyptic number.

It is an amenable number.

16238401 is a deficient number, since it is larger than the sum of its proper divisors (1).

16238401 is an equidigital number, since it uses as much as digits as its factorization.

16238401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 16238401 is about 4029.6899384444. The cubic root of 16238401 is about 253.2295718110.

The spelling of 16238401 in words is "sixteen million, two hundred thirty-eight thousand, four hundred one".