818936741894 has 4 divisors (see below), whose sum is σ = 1228405112844. Its totient is φ = 409468370946.

The previous prime is 818936741879. The next prime is 818936741897. The reversal of 818936741894 is 498147639818.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818936741897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204734185472 + ... + 204734185475.

It is an arithmetic number, because the mean of its divisors is an integer number (307101278211).

Almost surely, 2^818936741894 is an apocalyptic number.

818936741894 is a deficient number, since it is larger than the sum of its proper divisors (409468370950).

818936741894 is a wasteful number, since it uses less digits than its factorization.

818936741894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409468370949.

The product of its digits is 83607552, while the sum is 68.

The spelling of 818936741894 in words is "eight hundred eighteen billion, nine hundred thirty-six million, seven hundred forty-one thousand, eight hundred ninety-four".