1745200649 has 2 divisors, whose sum is σ = 1745200650. Its totient is φ = 1745200648.

The previous prime is 1745200621. The next prime is 1745200703. The reversal of 1745200649 is 9460025471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1526308624 + 218892025 = 39068^2 + 14795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1745200649 - 2²⁰ = 1744152073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1745200609) by changing a digit.

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 as a sum of consecutive naturals, namely, 872600324 + 872600325.

It is an arithmetic number, because the mean of its divisors is an integer number (872600325).

Almost surely, 2^1745200649 is an apocalyptic number.

It is an amenable number.

1745200649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745200649 is an equidigital number, since it uses as much as digits as its factorization.

1745200649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1745200649 is about 41775.5987270081. The cubic root of 1745200649 is about 1203.9684931307.

The spelling of 1745200649 in words is "one billion, seven hundred forty-five million, two hundred thousand, six hundred forty-nine".