6873678538 has 4 divisors (see below), whose sum is σ = 10310517810. Its totient is φ = 3436839268.

The previous prime is 6873678517. The next prime is 6873678563. The reversal of 6873678538 is 8358763786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5931618289 + 942060249 = 77017^2 + 30693^2 .

It is a super-3 number, since 3×6873678538³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1718419633 + ... + 1718419636.

Almost surely, 2^6873678538 is an apocalyptic number.

6873678538 is a deficient number, since it is larger than the sum of its proper divisors (3436839272).

6873678538 is a wasteful number, since it uses less digits than its factorization.

6873678538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436839271.

The product of its digits is 40642560, while the sum is 61.

The square root of 6873678538 is about 82907.6506602376. The cubic root of 6873678538 is about 1901.3543933096.

The spelling of 6873678538 in words is "six billion, eight hundred seventy-three million, six hundred seventy-eight thousand, five hundred thirty-eight".