1659740559 has 16 divisors (see below), whose sum is σ = 2320168704. Its totient is φ = 1053360000.

The previous prime is 1659740543. The next prime is 1659740569. The reversal of 1659740559 is 9550479561.

It is not a de Polignac number, because 1659740559 - 2⁴ = 1659740543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659740539) 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 in 15 ways as a sum of consecutive naturals, for example, 42442 + ... + 71559.

It is an arithmetic number, because the mean of its divisors is an integer number (145010544).

Almost surely, 2^1659740559 is an apocalyptic number.

1659740559 is a deficient number, since it is larger than the sum of its proper divisors (660428145).

1659740559 is a wasteful number, since it uses less digits than its factorization.

1659740559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114238.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The square root of 1659740559 is about 40739.9135860645. The cubic root of 1659740559 is about 1183.9864594625.

The spelling of 1659740559 in words is "one billion, six hundred fifty-nine million, seven hundred forty thousand, five hundred fifty-nine".