422613918 has 12 divisors (see below), whose sum is σ = 915663528. Its totient is φ = 140871300.

The previous prime is 422613883. The next prime is 422613943. The reversal of 422613918 is 819316224.

422613918 is a `hidden beast` number, since 4 + 2 + 261 + 391 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11739258 + ... + 11739293.

It is an arithmetic number, because the mean of its divisors is an integer number (76305294).

Almost surely, 2^422613918 is an apocalyptic number.

422613918 is an abundant number, since it is smaller than the sum of its proper divisors (493049610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422613918 is a wasteful number, since it uses less digits than its factorization.

422613918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23478559 (or 23478556 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 422613918 is about 20557.5756839176. The cubic root of 422613918 is about 750.4376219331.

The spelling of 422613918 in words is "four hundred twenty-two million, six hundred thirteen thousand, nine hundred eighteen".