2604816149 has 16 divisors (see below), whose sum is σ = 2858253552. Its totient is φ = 2359300608.

The previous prime is 2604816139. The next prime is 2604816161. The reversal of 2604816149 is 9416184062.

It can be written as a sum of positive squares in 8 ways, for example, as 659565124 + 1945251025 = 25682^2 + 44105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604816149 - 2¹² = 2604812053 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 (2604816119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179987 + ... + 193919.

It is an arithmetic number, because the mean of its divisors is an integer number (178640847).

Almost surely, 2^2604816149 is an apocalyptic number.

It is an amenable number.

2604816149 is a deficient number, since it is larger than the sum of its proper divisors (253437403).

2604816149 is a wasteful number, since it uses less digits than its factorization.

2604816149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14216.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2604816149 is about 51037.3995125143. The cubic root of 2604816149 is about 1375.9173865144.

The spelling of 2604816149 in words is "two billion, six hundred four million, eight hundred sixteen thousand, one hundred forty-nine".