1653616445 has 16 divisors (see below), whose sum is σ = 2145128832. Its totient is φ = 1216476480.

The previous prime is 1653616421. The next prime is 1653616451. The reversal of 1653616445 is 5446163561.

It is not a de Polignac number, because 1653616445 - 2¹⁰ = 1653615421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31271 + ... + 65460.

It is an arithmetic number, because the mean of its divisors is an integer number (134070552).

Almost surely, 2^1653616445 is an apocalyptic number.

It is an amenable number.

1653616445 is a deficient number, since it is larger than the sum of its proper divisors (491512387).

1653616445 is a wasteful number, since it uses less digits than its factorization.

1653616445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97012.

The product of its digits is 259200, while the sum is 41.

The square root of 1653616445 is about 40664.6830185605. The cubic root of 1653616445 is about 1182.5284395272.

The spelling of 1653616445 in words is "one billion, six hundred fifty-three million, six hundred sixteen thousand, four hundred forty-five".