1649095873 has 2 divisors, whose sum is σ = 1649095874. Its totient is φ = 1649095872.

The previous prime is 1649095859. The next prime is 1649095879. The reversal of 1649095873 is 3785909461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142980864 + 506115009 = 33808^2 + 22497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649095873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1649095873.

It is not a weakly prime, because it can be changed into another prime (1649095879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824547936 + 824547937.

It is an arithmetic number, because the mean of its divisors is an integer number (824547937).

Almost surely, 2^1649095873 is an apocalyptic number.

It is an amenable number.

1649095873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649095873 is an equidigital number, since it uses as much as digits as its factorization.

1649095873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 1649095873 is about 40609.0614641609. The cubic root of 1649095873 is about 1181.4498775159.

The spelling of 1649095873 in words is "one billion, six hundred forty-nine million, ninety-five thousand, eight hundred seventy-three".