2538706621 has 8 divisors (see below), whose sum is σ = 2773108800. Its totient is φ = 2304906240.

The previous prime is 2538706589. The next prime is 2538706631. The reversal of 2538706621 is 1266078352.

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 2538706621 - 2⁵ = 2538706589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538706631) 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, 141601 + ... + 158518.

It is an arithmetic number, because the mean of its divisors is an integer number (346638600).

Almost surely, 2^2538706621 is an apocalyptic number.

It is an amenable number.

2538706621 is a deficient number, since it is larger than the sum of its proper divisors (234402179).

2538706621 is a wasteful number, since it uses less digits than its factorization.

2538706621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300899.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2538706621 is about 50385.5794945339. The cubic root of 2538706621 is about 1364.1773627875.

The spelling of 2538706621 in words is "two billion, five hundred thirty-eight million, seven hundred six thousand, six hundred twenty-one".