6815864242 has 16 divisors (see below), whose sum is σ = 11154866400. Its totient is φ = 3097666240.

The previous prime is 6815864227. The next prime is 6815864267. The reversal of 6815864242 is 2424685186.

It is a junction number, because it is equal to n+sod(n) for n = 6815864192 and 6815864201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165609 + ... + 202627.

It is an arithmetic number, because the mean of its divisors is an integer number (697179150).

Almost surely, 2^6815864242 is an apocalyptic number.

6815864242 is a deficient number, since it is larger than the sum of its proper divisors (4339002158).

6815864242 is a wasteful number, since it uses less digits than its factorization.

6815864242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45401.

The product of its digits is 737280, while the sum is 46.

The square root of 6815864242 is about 82558.2475710331. The cubic root of 6815864242 is about 1896.0086333187.

The spelling of 6815864242 in words is "six billion, eight hundred fifteen million, eight hundred sixty-four thousand, two hundred forty-two".