1219350240 has 192 divisors, whose sum is σ = 4415342400. Its totient is φ = 313915392.

The previous prime is 1219350233. The next prime is 1219350247. The reversal of 1219350240 is 420539121.

It is an interprime number because it is at equal distance from previous prime (1219350233) and next prime (1219350247).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219350247) 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, 120414 + ... + 130146.

It is an arithmetic number, because the mean of its divisors is an integer number (22996575).

Almost surely, 2^1219350240 is an apocalyptic number.

1219350240 is a gapful number since it is divisible by the number (10) 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 1219350240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207671200).

1219350240 is an abundant number, since it is smaller than the sum of its proper divisors (3195992160).

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

1219350240 is a wasteful number, since it uses less digits than its factorization.

1219350240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9786 (or 9772 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1219350240 is about 34919.1958670299. The cubic root of 1219350240 is about 1068.3400003208.

Adding to 1219350240 its reverse (420539121), we get a palindrome (1639889361).

The spelling of 1219350240 in words is "one billion, two hundred nineteen million, three hundred fifty thousand, two hundred forty".