840464999918 has 8 divisors (see below), whose sum is σ = 1261736825448. Its totient is φ = 419886058104.

The previous prime is 840464999917. The next prime is 840464999947. The reversal of 840464999918 is 819999464048.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840464999917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173217896 + ... + 173222747.

It is an arithmetic number, because the mean of its divisors is an integer number (157717103181).

Almost surely, 2^840464999918 is an apocalyptic number.

840464999918 is a deficient number, since it is larger than the sum of its proper divisors (421271825530).

840464999918 is a wasteful number, since it uses less digits than its factorization.

840464999918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346441858.

The product of its (nonzero) digits is 161243136, while the sum is 71.

The spelling of 840464999918 in words is "eight hundred forty billion, four hundred sixty-four million, nine hundred ninety-nine thousand, nine hundred eighteen".