2678371387 has 18 divisors (see below), whose sum is σ = 2811353796. Its totient is φ = 2551577760.

The previous prime is 2678371351. The next prime is 2678371391. The reversal of 2678371387 is 7831738762.

It is not a de Polignac number, because 2678371387 - 2⁷ = 2678371259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2678372387) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5120908 + ... + 5121430.

It is an arithmetic number, because the mean of its divisors is an integer number (156186322).

Almost surely, 2^2678371387 is an apocalyptic number.

2678371387 is a deficient number, since it is larger than the sum of its proper divisors (132982409).

2678371387 is an frugal number, since it uses more digits than its factorization.

2678371387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 627 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 52.

The square root of 2678371387 is about 51752.9843294085. The cubic root of 2678371387 is about 1388.7484874069.

The spelling of 2678371387 in words is "two billion, six hundred seventy-eight million, three hundred seventy-one thousand, three hundred eighty-seven".