2539544340 has 96 divisors (see below), whose sum is σ = 7199466624. Its totient is φ = 668815360.

The previous prime is 2539544323. The next prime is 2539544363. The reversal of 2539544340 is 434459352.

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, 1865260 + ... + 1866620.

It is an arithmetic number, because the mean of its divisors is an integer number (74994444).

Almost surely, 2^2539544340 is an apocalyptic number.

2539544340 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 2539544340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3599733312).

2539544340 is an abundant number, since it is smaller than the sum of its proper divisors (4659922284).

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

2539544340 is a wasteful number, since it uses less digits than its factorization.

2539544340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 2539544340 is about 50393.8918917759. The cubic root of 2539544340 is about 1364.3273960906.

The spelling of 2539544340 in words is "two billion, five hundred thirty-nine million, five hundred forty-four thousand, three hundred forty".