818840649094 has 8 divisors (see below), whose sum is σ = 1322742587040. Its totient is φ = 377926453416.

The previous prime is 818840649049. The next prime is 818840649101. The reversal of 818840649094 is 490946048818.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15746935534 + ... + 15746935585.

It is an arithmetic number, because the mean of its divisors is an integer number (165342823380).

Almost surely, 2^818840649094 is an apocalyptic number.

818840649094 is a deficient number, since it is larger than the sum of its proper divisors (503901937946).

818840649094 is a wasteful number, since it uses less digits than its factorization.

818840649094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31493871134.

The product of its (nonzero) digits is 15925248, while the sum is 61.

The spelling of 818840649094 in words is "eight hundred eighteen billion, eight hundred forty million, six hundred forty-nine thousand, ninety-four".