1650049897 has 2 divisors, whose sum is σ = 1650049898. Its totient is φ = 1650049896.

The previous prime is 1650049883. The next prime is 1650049949. The reversal of 1650049897 is 7989400561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1569427456 + 80622441 = 39616^2 + 8979^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650049897 - 2⁷ = 1650049769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1650049897.

It is not a weakly prime, because it can be changed into another prime (1650049097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825024948 + 825024949.

It is an arithmetic number, because the mean of its divisors is an integer number (825024949).

Almost surely, 2^1650049897 is an apocalyptic number.

It is an amenable number.

1650049897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650049897 is an equidigital number, since it uses as much as digits as its factorization.

1650049897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1650049897 is about 40620.8062081490. The cubic root of 1650049897 is about 1181.6776617769.

The spelling of 1650049897 in words is "one billion, six hundred fifty million, forty-nine thousand, eight hundred ninety-seven".