2518478732 has 48 divisors (see below), whose sum is σ = 5522888448. Its totient is φ = 976221120.

The previous prime is 2518478731. The next prime is 2518478749. The reversal of 2518478732 is 2378748152.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2518478731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39923 + ... + 81429.

It is an arithmetic number, because the mean of its divisors is an integer number (115060176).

Almost surely, 2^2518478732 is an apocalyptic number.

2518478732 is a gapful number since it is divisible by the number (22) 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 2518478732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2761444224).

2518478732 is an abundant number, since it is smaller than the sum of its proper divisors (3004409716).

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

2518478732 is a wasteful number, since it uses less digits than its factorization.

2518478732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41726 (or 41724 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The square root of 2518478732 is about 50184.4471126264. The cubic root of 2518478732 is about 1360.5445361229.

The spelling of 2518478732 in words is "two billion, five hundred eighteen million, four hundred seventy-eight thousand, seven hundred thirty-two".