1518255480 has 128 divisors (see below), whose sum is σ = 5278970880. Its totient is φ = 342128640.

The previous prime is 1518255449. The next prime is 1518255493. The reversal of 1518255480 is 845528151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46912 + ... + 72368.

It is an arithmetic number, because the mean of its divisors is an integer number (41241960).

Almost surely, 2^1518255480 is an apocalyptic number.

1518255480 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 1518255480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2639485440).

1518255480 is an abundant number, since it is smaller than the sum of its proper divisors (3760715400).

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

1518255480 is a wasteful number, since it uses less digits than its factorization.

1518255480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25549 (or 25545 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 39.

The square root of 1518255480 is about 38964.7979591836. The cubic root of 1518255480 is about 1149.3393760871.

The spelling of 1518255480 in words is "one billion, five hundred eighteen million, two hundred fifty-five thousand, four hundred eighty".