2539137643 has 8 divisors (see below), whose sum is σ = 2906769888. Its totient is φ = 2172729984.

The previous prime is 2539137619. The next prime is 2539137649. The reversal of 2539137643 is 3467319352.

It is a happy number.

2539137643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2539137643 - 2²¹ = 2537040491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2539137643.

It is not an unprimeable number, because it can be changed into a prime (2539137649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301696 + ... + 309997.

It is an arithmetic number, because the mean of its divisors is an integer number (363346236).

Almost surely, 2^2539137643 is an apocalyptic number.

2539137643 is a deficient number, since it is larger than the sum of its proper divisors (367632245).

2539137643 is an equidigital number, since it uses as much as digits as its factorization.

2539137643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612293.

The product of its digits is 408240, while the sum is 43.

The square root of 2539137643 is about 50389.8565487142. The cubic root of 2539137643 is about 1364.2545618328.

The spelling of 2539137643 in words is "two billion, five hundred thirty-nine million, one hundred thirty-seven thousand, six hundred forty-three".