2219749434 has 80 divisors (see below), whose sum is σ = 5729568768. Its totient is φ = 629179488.

The previous prime is 2219749421. The next prime is 2219749489. The reversal of 2219749434 is 4349479122.

2219749434 is a `hidden beast` number, since 22 + 197 + 4 + 9 + 434 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (435456) is a multiple of the sum of its prime divisors (15552).

It is a self number, because there is not a number n which added to its sum of digits gives 2219749434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 136312 + ... + 151724.

Almost surely, 2^2219749434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2219749434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2864784384).

2219749434 is an abundant number, since it is smaller than the sum of its proper divisors (3509819334).

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

2219749434 is a wasteful number, since it uses less digits than its factorization.

2219749434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15561 (or 15552 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2219749434 is about 47114.2168989361. The cubic root of 2219749434 is about 1304.4716688125.

It can be divided in two parts, 22197 and 49434, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 2219749434 in words is "two billion, two hundred nineteen million, seven hundred forty-nine thousand, four hundred thirty-four".