2519999940 has 96 divisors (see below), whose sum is σ = 7250632704. Its totient is φ = 653641600.

The previous prime is 2519999939. The next prime is 2520000017. The reversal of 2519999940 is 499999152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468265 + ... + 473615.

It is an arithmetic number, because the mean of its divisors is an integer number (75527424).

Almost surely, 2^2519999940 is an apocalyptic number.

2519999940 is a gapful number since it is divisible by the number (20) 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 2519999940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3625316352).

2519999940 is an abundant number, since it is smaller than the sum of its proper divisors (4730632764).

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

2519999940 is a wasteful number, since it uses less digits than its factorization.

2519999940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577 (or 5575 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 57.

The square root of 2519999940 is about 50199.6009944302. The cubic root of 2519999940 is about 1360.8184123905.

The spelling of 2519999940 in words is "two billion, five hundred nineteen million, nine hundred ninety-nine thousand, nine hundred forty".