2219393540 has 192 divisors, whose sum is σ = 5984993280. Its totient is φ = 672468480.

The previous prime is 2219393513. The next prime is 2219393549. The reversal of 2219393540 is 453939122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2219393494 and 2219393503.

It is not an unprimeable number, because it can be changed into a prime (2219393549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7842239 + ... + 7842521.

It is an arithmetic number, because the mean of its divisors is an integer number (31171840).

Almost surely, 2^2219393540 is an apocalyptic number.

2219393540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2219393540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2992496640).

2219393540 is an abundant number, since it is smaller than the sum of its proper divisors (3765599740).

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

2219393540 is a wasteful number, since it uses less digits than its factorization.

2219393540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 2219393540 is about 47110.4398196408. The cubic root of 2219393540 is about 1304.4019494640.

The spelling of 2219393540 in words is "two billion, two hundred nineteen million, three hundred ninety-three thousand, five hundred forty".