2499738516 has 144 divisors (see below), whose sum is σ = 7167061440. Its totient is φ = 752875200.

The previous prime is 2499738511. The next prime is 2499738517. The reversal of 2499738516 is 6158379942.

2499738516 is a `hidden beast` number, since 2 + 4 + 9 + 97 + 38 + 516 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499738511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2573911 + ... + 2574881.

It is an arithmetic number, because the mean of its divisors is an integer number (49771260).

Almost surely, 2^2499738516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499738516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3583530720).

2499738516 is an abundant number, since it is smaller than the sum of its proper divisors (4667322924).

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

2499738516 is a wasteful number, since it uses less digits than its factorization.

2499738516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1184 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 2499738516 is about 49997.3850916225. The cubic root of 2499738516 is about 1357.1614881959.

The spelling of 2499738516 in words is "two billion, four hundred ninety-nine million, seven hundred thirty-eight thousand, five hundred sixteen".