2915868540 has 144 divisors (see below), whose sum is σ = 8881941600. Its totient is φ = 714415104.

The previous prime is 2915868533. The next prime is 2915868563. The reversal of 2915868540 is 458685192.

It is a self number, because there is not a number n which added to its sum of digits gives 2915868540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2727126 + ... + 2728194.

It is an arithmetic number, because the mean of its divisors is an integer number (61680150).

Almost surely, 2^2915868540 is an apocalyptic number.

2915868540 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 2915868540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4440970800).

2915868540 is an abundant number, since it is smaller than the sum of its proper divisors (5966073060).

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

2915868540 is a wasteful number, since it uses less digits than its factorization.

2915868540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 2915868540 is about 53998.7827640587. The cubic root of 2915868540 is about 1428.6394773395.

The spelling of 2915868540 in words is "two billion, nine hundred fifteen million, eight hundred sixty-eight thousand, five hundred forty".