2390938785 has 24 divisors (see below), whose sum is σ = 4287202920. Its totient is φ = 1231195392.

The previous prime is 2390938733. The next prime is 2390938789. The reversal of 2390938785 is 5878390932.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 740710656 + 1650228129 = 27216^2 + 40623^2 .

It is not a de Polignac number, because 2390938785 - 2³¹ = 243455137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2390938789) 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, 914764 + ... + 917373.

It is an arithmetic number, because the mean of its divisors is an integer number (178633455).

Almost surely, 2^2390938785 is an apocalyptic number.

It is an amenable number.

2390938785 is a deficient number, since it is larger than the sum of its proper divisors (1896264135).

2390938785 is a wasteful number, since it uses less digits than its factorization.

2390938785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832177 (or 1832174 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 2390938785 is about 48897.2267618523. The cubic root of 2390938785 is about 1337.1788096480.

The spelling of 2390938785 in words is "two billion, three hundred ninety million, nine hundred thirty-eight thousand, seven hundred eighty-five".