818542650 has 24 divisors (see below), whose sum is σ = 2029986144. Its totient is φ = 218278000.

The previous prime is 818542619. The next prime is 818542657. The reversal of 818542650 is 56245818.

818542650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 818542599 and 818542608.

It is not an unprimeable number, because it can be changed into a prime (818542657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2728326 + ... + 2728625.

It is an arithmetic number, because the mean of its divisors is an integer number (84582756).

Almost surely, 2^818542650 is an apocalyptic number.

818542650 is an abundant number, since it is smaller than the sum of its proper divisors (1211443494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818542650 is a wasteful number, since it uses less digits than its factorization.

818542650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456966 (or 5456961 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 818542650 is about 28610.1843754982. The cubic root of 818542650 is about 935.4353354199.

The spelling of 818542650 in words is "eight hundred eighteen million, five hundred forty-two thousand, six hundred fifty".