1660923359 has 2 divisors, whose sum is σ = 1660923360. Its totient is φ = 1660923358.

The previous prime is 1660923353. The next prime is 1660923421. The reversal of 1660923359 is 9533290661.

It is a weak prime.

It is an emirp because it is prime and its reverse (9533290661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660923359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660923353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830461679 + 830461680.

It is an arithmetic number, because the mean of its divisors is an integer number (830461680).

Almost surely, 2^1660923359 is an apocalyptic number.

1660923359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660923359 is an equidigital number, since it uses as much as digits as its factorization.

1660923359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 1660923359 is about 40754.4274772693. The cubic root of 1660923359 is about 1184.2676453066.

The spelling of 1660923359 in words is "one billion, six hundred sixty million, nine hundred twenty-three thousand, three hundred fifty-nine".