219135996 has 96 divisors (see below), whose sum is σ = 605767680. Its totient is φ = 68346432.

The previous prime is 219135991. The next prime is 219136003. The reversal of 219135996 is 699531912.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219135991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115810 + ... + 117686.

It is an arithmetic number, because the mean of its divisors is an integer number (6310080).

Almost surely, 2^219135996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219135996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302883840).

219135996 is an abundant number, since it is smaller than the sum of its proper divisors (386631684).

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

219135996 is a wasteful number, since it uses less digits than its factorization.

219135996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1952 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 219135996 is about 14803.2427528566. The cubic root of 219135996 is about 602.8897598031.

The spelling of 219135996 in words is "two hundred nineteen million, one hundred thirty-five thousand, nine hundred ninety-six".