1649525497573 has 2 divisors, whose sum is σ = 1649525497574. Its totient is φ = 1649525497572.

The previous prime is 1649525497549. The next prime is 1649525497639. The reversal of 1649525497573 is 3757945259461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1452586584289 + 196938913284 = 1205233^2 + 443778^2 .

It is a cyclic number.

It is not a de Polignac number, because 1649525497573 - 2²⁹ = 1648988626661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1649525497499 and 1649525497508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1649525497273) 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, 824762748786 + 824762748787.

It is an arithmetic number, because the mean of its divisors is an integer number (824762748787).

Almost surely, 2^{1649525497573} is an apocalyptic number.

It is an amenable number.

1649525497573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649525497573 is an equidigital number, since it uses as much as digits as its factorization.

1649525497573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768000, while the sum is 67.

The spelling of 1649525497573 in words is "one trillion, six hundred forty-nine billion, five hundred twenty-five million, four hundred ninety-seven thousand, five hundred seventy-three".