2643678338 has 16 divisors (see below), whose sum is σ = 4688297280. Its totient is φ = 1093935696.

The previous prime is 2643678337. The next prime is 2643678353. The reversal of 2643678338 is 8338763462.

It is not an unprimeable number, because it can be changed into a prime (2643678337) 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, 3255356 + ... + 3256167.

It is an arithmetic number, because the mean of its divisors is an integer number (293018580).

Almost surely, 2^2643678338 is an apocalyptic number.

2643678338 is a deficient number, since it is larger than the sum of its proper divisors (2044618942).

2643678338 is a wasteful number, since it uses less digits than its factorization.

2643678338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6511561.

The product of its digits is 3483648, while the sum is 50.

The square root of 2643678338 is about 51416.7126331507. The cubic root of 2643678338 is about 1382.7262388315.

The spelling of 2643678338 in words is "two billion, six hundred forty-three million, six hundred seventy-eight thousand, three hundred thirty-eight".