6813740842 has 4 divisors (see below), whose sum is σ = 10220611266. Its totient is φ = 3406870420.

The previous prime is 6813740819. The next prime is 6813740861. The reversal of 6813740842 is 2480473186.

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., 4477081921 + 2336658921 = 66911^2 + 48339^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703435209 + ... + 1703435212.

Almost surely, 2^6813740842 is an apocalyptic number.

6813740842 is a deficient number, since it is larger than the sum of its proper divisors (3406870424).

6813740842 is a wasteful number, since it uses less digits than its factorization.

6813740842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406870423.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 6813740842 is about 82545.3865579416. The cubic root of 6813740842 is about 1895.8117200223.

The spelling of 6813740842 in words is "six billion, eight hundred thirteen million, seven hundred forty thousand, eight hundred forty-two".