818651042 has 16 divisors (see below), whose sum is σ = 1340388000. Its totient is φ = 371898240.

The previous prime is 818651039. The next prime is 818651047. The reversal of 818651042 is 240156818.

It is a junction number, because it is equal to n+sod(n) for n = 818650993 and 818651011.

It is not an unprimeable number, because it can be changed into a prime (818651047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31709 + ... + 51407.

It is an arithmetic number, because the mean of its divisors is an integer number (83774250).

Almost surely, 2^818651042 is an apocalyptic number.

818651042 is a deficient number, since it is larger than the sum of its proper divisors (521736958).

818651042 is a wasteful number, since it uses less digits than its factorization.

818651042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21601.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 818651042 is about 28612.0786032752. The cubic root of 818651042 is about 935.4766239350.

The spelling of 818651042 in words is "eight hundred eighteen million, six hundred fifty-one thousand, forty-two".