9815162842 has 16 divisors (see below), whose sum is σ = 15684348960. Its totient is φ = 4593270672.

The previous prime is 9815162837. The next prime is 9815162873. The reversal of 9815162842 is 2482615189.

It is a super-2 number, since 2×9815162842² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9815162792 and 9815162801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552833 + ... + 1559140.

It is an arithmetic number, because the mean of its divisors is an integer number (980271810).

Almost surely, 2^9815162842 is an apocalyptic number.

9815162842 is a deficient number, since it is larger than the sum of its proper divisors (5869186118).

9815162842 is a wasteful number, since it uses less digits than its factorization.

9815162842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112077.

The product of its digits is 276480, while the sum is 46.

The square root of 9815162842 is about 99071.5036829461. The cubic root of 9815162842 is about 2141.0780693516.

The spelling of 9815162842 in words is "nine billion, eight hundred fifteen million, one hundred sixty-two thousand, eight hundred forty-two".