2378611985 has 4 divisors (see below), whose sum is σ = 2854334388. Its totient is φ = 1902889584.

The previous prime is 2378611867. The next prime is 2378611997. The reversal of 2378611985 is 5891168732.

2378611985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 452455441 + 1926156544 = 21271^2 + 43888^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378611985 - 2²² = 2374417681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237861194 + ... + 237861203.

It is an arithmetic number, because the mean of its divisors is an integer number (713583597).

Almost surely, 2^2378611985 is an apocalyptic number.

It is an amenable number.

2378611985 is a deficient number, since it is larger than the sum of its proper divisors (475722403).

2378611985 is an equidigital number, since it uses as much as digits as its factorization.

2378611985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475722402.

The product of its digits is 725760, while the sum is 50.

The square root of 2378611985 is about 48771.0158290762. The cubic root of 2378611985 is about 1334.8768485575.

The spelling of 2378611985 in words is "two billion, three hundred seventy-eight million, six hundred eleven thousand, nine hundred eighty-five".