2378523861 has 12 divisors (see below), whose sum is σ = 3926452192. Its totient is φ = 1359156456.

The previous prime is 2378523859. The next prime is 2378523869. The reversal of 2378523861 is 1683258732.

2378523861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2378523861 - 2¹ = 2378523859 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378523869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18877111 + ... + 18877236.

Almost surely, 2^2378523861 is an apocalyptic number.

2378523861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2378523861 is a deficient number, since it is larger than the sum of its proper divisors (1547928331).

2378523861 is a wasteful number, since it uses less digits than its factorization.

2378523861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37754360 (or 37754357 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 2378523861 is about 48770.1123742810. The cubic root of 2378523861 is about 1334.8603632934.

The spelling of 2378523861 in words is "two billion, three hundred seventy-eight million, five hundred twenty-three thousand, eight hundred sixty-one".