422918526818 has 6 divisors (see below), whose sum is σ = 634379169771. Its totient is φ = 211458803562.

The previous prime is 422918526781. The next prime is 422918526829. The reversal of 422918526818 is 818625819224.

It can be written as a sum of positive squares in only one way, i.e., 211459263409 + 211459263409 = 459847^2 + 459847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=459847.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 689771 + ... + 1149617.

Almost surely, 2^422918526818 is an apocalyptic number.

422918526818 is a deficient number, since it is larger than the sum of its proper divisors (211460642953).

422918526818 is an frugal number, since it uses more digits than its factorization.

422918526818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919696 (or 459849 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 56.

The spelling of 422918526818 in words is "four hundred twenty-two billion, nine hundred eighteen million, five hundred twenty-six thousand, eight hundred eighteen".