2653445809 has 4 divisors (see below), whose sum is σ = 3032509504. Its totient is φ = 2274382116.

The previous prime is 2653445803. The next prime is 2653445819. The reversal of 2653445809 is 9085443562.

2653445809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 2653445809 - 2⁹ = 2653445297 is a prime.

It is a super-2 number, since 2×2653445809² = 14081549322599328962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2653445803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189531837 + ... + 189531850.

It is an arithmetic number, because the mean of its divisors is an integer number (758127376).

Almost surely, 2^2653445809 is an apocalyptic number.

It is an amenable number.

2653445809 is a deficient number, since it is larger than the sum of its proper divisors (379063695).

2653445809 is an equidigital number, since it uses as much as digits as its factorization.

2653445809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379063694.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 2653445809 is about 51511.6084877962. The cubic root of 2653445809 is about 1384.4270432626.

The spelling of 2653445809 in words is "two billion, six hundred fifty-three million, four hundred forty-five thousand, eight hundred nine".