2385861640 has 16 divisors (see below), whose sum is σ = 5368188780. Its totient is φ = 954344640.

The previous prime is 2385861629. The next prime is 2385861641. The reversal of 2385861640 is 461685832.

It can be written as a sum of positive squares in 2 ways, for example, as 2208812004 + 177049636 = 46998^2 + 13306^2 .

It is not an unprimeable number, because it can be changed into a prime (2385861641) 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 3 ways as a sum of consecutive naturals, for example, 29823231 + ... + 29823310.

Almost surely, 2^2385861640 is an apocalyptic number.

2385861640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2385861640 is an abundant number, since it is smaller than the sum of its proper divisors (2982327140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2385861640 is a wasteful number, since it uses less digits than its factorization.

2385861640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59646552 (or 59646548 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 2385861640 is about 48845.2826790879. The cubic root of 2385861640 is about 1336.2316416805.

The spelling of 2385861640 in words is "two billion, three hundred eighty-five million, eight hundred sixty-one thousand, six hundred forty".