616016549 has 2 divisors, whose sum is σ = 616016550. Its totient is φ = 616016548.

The previous prime is 616016503. The next prime is 616016551. The reversal of 616016549 is 945610616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615784225 + 232324 = 24815^2 + 482^2 .

It is a cyclic number.

It is not a de Polignac number, because 616016549 - 2¹⁶ = 615951013 is a prime.

Together with 616016551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616016249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308008274 + 308008275.

It is an arithmetic number, because the mean of its divisors is an integer number (308008275).

Almost surely, 2^616016549 is an apocalyptic number.

It is an amenable number.

616016549 is a deficient number, since it is larger than the sum of its proper divisors (1).

616016549 is an equidigital number, since it uses as much as digits as its factorization.

616016549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 616016549 is about 24819.6806788484. The cubic root of 616016549 is about 850.8717925171.

The spelling of 616016549 in words is "six hundred sixteen million, sixteen thousand, five hundred forty-nine".