2378931688 has 16 divisors (see below), whose sum is σ = 5097710880. Its totient is φ = 1019542128.

The previous prime is 2378931673. The next prime is 2378931691. The reversal of 2378931688 is 8861398732.

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, 21240406 + ... + 21240517.

It is an arithmetic number, because the mean of its divisors is an integer number (318606930).

Almost surely, 2^2378931688 is an apocalyptic number.

2378931688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2378931688 is an abundant number, since it is smaller than the sum of its proper divisors (2718779192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2378931688 is a wasteful number, since it uses less digits than its factorization.

2378931688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42480936 (or 42480932 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The square root of 2378931688 is about 48774.2933111286. The cubic root of 2378931688 is about 1334.9366516439.

The spelling of 2378931688 in words is "two billion, three hundred seventy-eight million, nine hundred thirty-one thousand, six hundred eighty-eight".