1659193345 has 16 divisors (see below), whose sum is σ = 2008800000. Its totient is φ = 1315562688.

The previous prime is 1659193309. The next prime is 1659193379. The reversal of 1659193345 is 5433919561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1659193345 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1659193295 and 1659193304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264556 + ... + 270754.

It is an arithmetic number, because the mean of its divisors is an integer number (125550000).

Almost surely, 2^1659193345 is an apocalyptic number.

It is an amenable number.

1659193345 is a deficient number, since it is larger than the sum of its proper divisors (349606655).

1659193345 is a wasteful number, since it uses less digits than its factorization.

1659193345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672.

The product of its digits is 437400, while the sum is 46.

The square root of 1659193345 is about 40733.1970878791. The cubic root of 1659193345 is about 1183.8563256334.

The spelling of 1659193345 in words is "one billion, six hundred fifty-nine million, one hundred ninety-three thousand, three hundred forty-five".