1650450273 has 4 divisors (see below), whose sum is σ = 2200600368. Its totient is φ = 1100300180.

The previous prime is 1650450271. The next prime is 1650450289. The reversal of 1650450273 is 3720540561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3720540561 = 3 ⋅1240180187.

It is a cyclic number.

It is not a de Polignac number, because 1650450273 - 2¹ = 1650450271 is a prime.

It is a super-2 number, since 2×1650450273² = 5447972207291549058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1650450271) 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 in 3 ways as a sum of consecutive naturals, for example, 275075043 + ... + 275075048.

It is an arithmetic number, because the mean of its divisors is an integer number (550150092).

Almost surely, 2^1650450273 is an apocalyptic number.

It is an amenable number.

1650450273 is a deficient number, since it is larger than the sum of its proper divisors (550150095).

1650450273 is an equidigital number, since it uses as much as digits as its factorization.

1650450273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550150094.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1650450273 is about 40625.7341225977. The cubic root of 1650450273 is about 1181.7732300211.

The spelling of 1650450273 in words is "one billion, six hundred fifty million, four hundred fifty thousand, two hundred seventy-three".