8343811642 has 8 divisors (see below), whose sum is σ = 12529192500. Its totient is φ = 4167414144.

The previous prime is 8343811631. The next prime is 8343811657. The reversal of 8343811642 is 2461183438.

It can be written as a sum of positive squares in 2 ways, for example, as 8228485521 + 115326121 = 90711^2 + 10739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 8343811595 and 8343811604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243517 + ... + 2247232.

Almost surely, 2^8343811642 is an apocalyptic number.

8343811642 is a deficient number, since it is larger than the sum of its proper divisors (4185380858).

8343811642 is a wasteful number, since it uses less digits than its factorization.

8343811642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491680.

The product of its digits is 110592, while the sum is 40.

The square root of 8343811642 is about 91344.4669479219. The cubic root of 8343811642 is about 2028.2500584808.

The spelling of 8343811642 in words is "eight billion, three hundred forty-three million, eight hundred eleven thousand, six hundred forty-two".