2385581649 has 24 divisors (see below), whose sum is σ = 3552600672. Its totient is φ = 1412147520.

The previous prime is 2385581609. The next prime is 2385581663. The reversal of 2385581649 is 9461855832.

It is not a de Polignac number, because 2385581649 - 2¹⁶ = 2385516113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2385581609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41469 + ... + 80565.

It is an arithmetic number, because the mean of its divisors is an integer number (148025028).

Almost surely, 2^2385581649 is an apocalyptic number.

It is an amenable number.

2385581649 is a deficient number, since it is larger than the sum of its proper divisors (1167019023).

2385581649 is a wasteful number, since it uses less digits than its factorization.

2385581649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39197 (or 39154 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 51.

The square root of 2385581649 is about 48842.4164942727. The cubic root of 2385581649 is about 1336.1793688155.

The spelling of 2385581649 in words is "two billion, three hundred eighty-five million, five hundred eighty-one thousand, six hundred forty-nine".