818918939654 has 8 divisors (see below), whose sum is σ = 1270736285760. Its totient is φ = 395340177736.

The previous prime is 818918939623. The next prime is 818918939677. The reversal of 818918939654 is 456939819818.

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, 7059645974 + ... + 7059646089.

It is an arithmetic number, because the mean of its divisors is an integer number (158842035720).

Almost surely, 2^818918939654 is an apocalyptic number.

818918939654 is a deficient number, since it is larger than the sum of its proper divisors (451817346106).

818918939654 is a wasteful number, since it uses less digits than its factorization.

818918939654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14119292094.

The product of its digits is 134369280, while the sum is 71.

The spelling of 818918939654 in words is "eight hundred eighteen billion, nine hundred eighteen million, nine hundred thirty-nine thousand, six hundred fifty-four".