616442543 has 2 divisors, whose sum is σ = 616442544. Its totient is φ = 616442542.

The previous prime is 616442521. The next prime is 616442557. The reversal of 616442543 is 345244616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616442543 - 2¹⁸ = 616180399 is a prime.

It is equal to p_32137919 and since 616442543 and 32137919 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616442243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308221271 + 308221272.

It is an arithmetic number, because the mean of its divisors is an integer number (308221272).

Almost surely, 2^616442543 is an apocalyptic number.

616442543 is a deficient number, since it is larger than the sum of its proper divisors (1).

616442543 is an equidigital number, since it uses as much as digits as its factorization.

616442543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 616442543 is about 24828.2609741399. The cubic root of 616442543 is about 851.0678818153.

The spelling of 616442543 in words is "six hundred sixteen million, four hundred forty-two thousand, five hundred forty-three".