2543867378 has 32 divisors (see below), whose sum is σ = 4301724672. Its totient is φ = 1120190400.

The previous prime is 2543867353. The next prime is 2543867399. The reversal of 2543867378 is 8737683452.

2543867378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2543867378² = 12942522473705189768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35000 + ... + 79452.

It is an arithmetic number, because the mean of its divisors is an integer number (134428896).

Almost surely, 2^2543867378 is an apocalyptic number.

2543867378 is a deficient number, since it is larger than the sum of its proper divisors (1757857294).

2543867378 is a wasteful number, since it uses less digits than its factorization.

2543867378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44570.

The product of its digits is 6773760, while the sum is 53.

The square root of 2543867378 is about 50436.7661334467. The cubic root of 2543867378 is about 1365.1011169932.

The spelling of 2543867378 in words is "two billion, five hundred forty-three million, eight hundred sixty-seven thousand, three hundred seventy-eight".