2045240385 has 32 divisors (see below), whose sum is σ = 3441623040. Its totient is φ = 1035131328.

The previous prime is 2045240377. The next prime is 2045240387. The reversal of 2045240385 is 5830425402.

It is not a de Polignac number, because 2045240385 - 2³ = 2045240377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045240387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20476 + ... + 67154.

It is an arithmetic number, because the mean of its divisors is an integer number (107550720).

Almost surely, 2^2045240385 is an apocalyptic number.

It is an amenable number.

2045240385 is a deficient number, since it is larger than the sum of its proper divisors (1396382655).

2045240385 is a wasteful number, since it uses less digits than its factorization.

2045240385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46837.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 2045240385 is about 45224.3339917792. Note that the first 3 decimals coincide. The cubic root of 2045240385 is about 1269.3501925110.

Adding to 2045240385 its reverse (5830425402), we get a palindrome (7875665787).

The spelling of 2045240385 in words is "two billion, forty-five million, two hundred forty thousand, three hundred eighty-five".