16538087 has 2 divisors, whose sum is σ = 16538088. Its totient is φ = 16538086.

The previous prime is 16538057. The next prime is 16538099. The reversal of 16538087 is 78083561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16538087 - 2⁸ = 16537831 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16538087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16538057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8269043 + 8269044.

It is an arithmetic number, because the mean of its divisors is an integer number (8269044).

Almost surely, 2^16538087 is an apocalyptic number.

16538087 is a deficient number, since it is larger than the sum of its proper divisors (1).

16538087 is an equidigital number, since it uses as much as digits as its factorization.

16538087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 16538087 is about 4066.7046856146. The cubic root of 16538087 is about 254.7779022195. Note that the first 3 decimals are identical.

The spelling of 16538087 in words is "sixteen million, five hundred thirty-eight thousand, eighty-seven".