1518240240 has 480 divisors, whose sum is σ = 5941078080. Its totient is φ = 355829760.

The previous prime is 1518240197. The next prime is 1518240247. The reversal of 1518240240 is 420428151.

1518240240 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 (1518240247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9670242 + ... + 9670398.

It is an arithmetic number, because the mean of its divisors is an integer number (12377246).

Almost surely, 2^1518240240 is an apocalyptic number.

1518240240 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 1518240240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2970539040).

1518240240 is an abundant number, since it is smaller than the sum of its proper divisors (4422837840).

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

1518240240 is a wasteful number, since it uses less digits than its factorization.

1518240240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1518240240 is about 38964.6023975608. The cubic root of 1518240240 is about 1149.3355304474.

Adding to 1518240240 its reverse (420428151), we get a palindrome (1938668391).

The spelling of 1518240240 in words is "one billion, five hundred eighteen million, two hundred forty thousand, two hundred forty".