2381399985 has 32 divisors (see below), whose sum is σ = 3912467328. Its totient is φ = 1236211200.

The previous prime is 2381399959. The next prime is 2381400019. The reversal of 2381399985 is 5899931832.

It is not a de Polignac number, because 2381399985 - 2⁷ = 2381399857 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 182685 + ... + 195285.

It is an arithmetic number, because the mean of its divisors is an integer number (122264604).

Almost surely, 2^2381399985 is an apocalyptic number.

It is an amenable number.

2381399985 is a deficient number, since it is larger than the sum of its proper divisors (1531067343).

2381399985 is a wasteful number, since it uses less digits than its factorization.

2381399985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945.

The product of its digits is 4199040, while the sum is 57.

The square root of 2381399985 is about 48799.5900085236. The cubic root of 2381399985 is about 1335.3981867111.

The spelling of 2381399985 in words is "two billion, three hundred eighty-one million, three hundred ninety-nine thousand, nine hundred eighty-five".