1606502543 has 2 divisors, whose sum is σ = 1606502544. Its totient is φ = 1606502542.

The previous prime is 1606502537. The next prime is 1606502591. The reversal of 1606502543 is 3452056061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1606502543 - 2¹⁸ = 1606240399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606508543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803251271 + 803251272.

It is an arithmetic number, because the mean of its divisors is an integer number (803251272).

Almost surely, 2^1606502543 is an apocalyptic number.

1606502543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606502543 is an equidigital number, since it uses as much as digits as its factorization.

1606502543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1606502543 is about 40081.1993707773. The cubic root of 1606502543 is about 1171.1894162422.

The spelling of 1606502543 in words is "one billion, six hundred six million, five hundred two thousand, five hundred forty-three".