2604545149 has 4 divisors (see below), whose sum is σ = 2605427136. Its totient is φ = 2603663164.

The previous prime is 2604545123. The next prime is 2604545161. The reversal of 2604545149 is 9415454062.

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 2604545149 - 2¹¹ = 2604543101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604545179) 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, 436549 + ... + 442474.

It is an arithmetic number, because the mean of its divisors is an integer number (651356784).

Almost surely, 2^2604545149 is an apocalyptic number.

It is an amenable number.

2604545149 is a deficient number, since it is larger than the sum of its proper divisors (881987).

2604545149 is an equidigital number, since it uses as much as digits as its factorization.

2604545149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881986.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 2604545149 is about 51034.7445276255. The cubic root of 2604545149 is about 1375.8696689376.

The spelling of 2604545149 in words is "two billion, six hundred four million, five hundred forty-five thousand, one hundred forty-nine".