219804370434 has 96 divisors (see below), whose sum is σ = 546027955200. Its totient is φ = 63252874080.

The previous prime is 219804370393. The next prime is 219804370519. The reversal of 219804370434 is 434073408912.

219804370434 is a `hidden beast` number, since 21 + 98 + 0 + 43 + 70 + 434 = 666.

It is a super-2 number, since 2×219804370434² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 219804370434.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459387 + ... + 806625.

It is an arithmetic number, because the mean of its divisors is an integer number (5687791200).

Almost surely, 2^219804370434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219804370434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273013977600).

219804370434 is an abundant number, since it is smaller than the sum of its proper divisors (326223584766).

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

219804370434 is a wasteful number, since it uses less digits than its factorization.

219804370434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347420 (or 347417 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 219804370434 in words is "two hundred nineteen billion, eight hundred four million, three hundred seventy thousand, four hundred thirty-four".