1659549653 has 2 divisors, whose sum is σ = 1659549654. Its totient is φ = 1659549652.

The previous prime is 1659549643. The next prime is 1659549677. The reversal of 1659549653 is 3569459561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1073086564 + 586463089 = 32758^2 + 24217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659549653 - 2⁶ = 1659549589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1659549595 and 1659549604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1659549643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829774826 + 829774827.

It is an arithmetic number, because the mean of its divisors is an integer number (829774827).

Almost surely, 2^1659549653 is an apocalyptic number.

It is an amenable number.

1659549653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659549653 is an equidigital number, since it uses as much as digits as its factorization.

1659549653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374000, while the sum is 53.

The square root of 1659549653 is about 40737.5705338450. The cubic root of 1659549653 is about 1183.9410630531.

The spelling of 1659549653 in words is "one billion, six hundred fifty-nine million, five hundred forty-nine thousand, six hundred fifty-three".