16135289 has 2 divisors, whose sum is σ = 16135290. Its totient is φ = 16135288.

The previous prime is 16135253. The next prime is 16135291. The reversal of 16135289 is 98253161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 3211264 = 3595^2 + 1792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16135289 is a prime.

It is a super-2 number, since 2×16135289² = 520695102227042, which contains 22 as substring.

Together with 16135291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16138289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067644 + 8067645.

It is an arithmetic number, because the mean of its divisors is an integer number (8067645).

Almost surely, 2^16135289 is an apocalyptic number.

It is an amenable number.

16135289 is a deficient number, since it is larger than the sum of its proper divisors (1).

16135289 is an equidigital number, since it uses as much as digits as its factorization.

16135289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 16135289 is about 4016.8755270733. The cubic root of 16135289 is about 252.6924402976.

The spelling of 16135289 in words is "sixteen million, one hundred thirty-five thousand, two hundred eighty-nine".