2678937438 has 16 divisors (see below), whose sum is σ = 5377648896. Its totient is φ = 889683480.

The previous prime is 2678937431. The next prime is 2678937439. The reversal of 2678937438 is 8347398762.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678937431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822156 + ... + 825407.

It is an arithmetic number, because the mean of its divisors is an integer number (336103056).

Almost surely, 2^2678937438 is an apocalyptic number.

2678937438 is an abundant number, since it is smaller than the sum of its proper divisors (2698711458).

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

2678937438 is a wasteful number, since it uses less digits than its factorization.

2678937438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647839.

The product of its digits is 12192768, while the sum is 57.

The square root of 2678937438 is about 51758.4528169071. The cubic root of 2678937438 is about 1388.8463139072.

The spelling of 2678937438 in words is "two billion, six hundred seventy-eight million, nine hundred thirty-seven thousand, four hundred thirty-eight".