2539748815 has 8 divisors (see below), whose sum is σ = 3052369728. Its totient is φ = 2028684960.

The previous prime is 2539748707. The next prime is 2539748821. The reversal of 2539748815 is 5188479352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2539748815 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385671 + ... + 392200.

It is an arithmetic number, because the mean of its divisors is an integer number (381546216).

Almost surely, 2^2539748815 is an apocalyptic number.

2539748815 is a deficient number, since it is larger than the sum of its proper divisors (512620913).

2539748815 is an equidigital number, since it uses as much as digits as its factorization.

2539748815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778529.

The product of its digits is 2419200, while the sum is 52.

The square root of 2539748815 is about 50395.9206186374. The cubic root of 2539748815 is about 1364.3640120237.

The spelling of 2539748815 in words is "two billion, five hundred thirty-nine million, seven hundred forty-eight thousand, eight hundred fifteen".