1653000449 has 4 divisors (see below), whose sum is σ = 1656818436. Its totient is φ = 1649182464.

The previous prime is 1653000439. The next prime is 1653000469. The reversal of 1653000449 is 9440003561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9440003561 = 2551 ⋅3700511.

It can be written as a sum of positive squares in 2 ways, for example, as 679123600 + 973876849 = 26060^2 + 31207^2 .

It is a cyclic number.

It is not a de Polignac number, because 1653000449 - 2²⁴ = 1636223233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653000439) 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 in 3 ways as a sum of consecutive naturals, for example, 1908344 + ... + 1909209.

It is an arithmetic number, because the mean of its divisors is an integer number (414204609).

Almost surely, 2^1653000449 is an apocalyptic number.

It is an amenable number.

1653000449 is a deficient number, since it is larger than the sum of its proper divisors (3817987).

1653000449 is an equidigital number, since it uses as much as digits as its factorization.

1653000449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817986.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1653000449 is about 40657.1082223023. The cubic root of 1653000449 is about 1182.3815849850.

The spelling of 1653000449 in words is "one billion, six hundred fifty-three million, four hundred forty-nine", and thus it is an aban number.