2538228139 has 4 divisors (see below), whose sum is σ = 2549122056. Its totient is φ = 2527334224.

The previous prime is 2538228131. The next prime is 2538228149. The reversal of 2538228139 is 9318228352.

2538228139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2538228139 - 2³ = 2538228131 is a prime.

It is a super-2 number, since 2×2538228139² = 12885204171222806642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2538228095 and 2538228104.

It is not an unprimeable number, because it can be changed into a prime (2538228131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5446609 + ... + 5447074.

It is an arithmetic number, because the mean of its divisors is an integer number (637280514).

Almost surely, 2^2538228139 is an apocalyptic number.

2538228139 is a deficient number, since it is larger than the sum of its proper divisors (10893917).

2538228139 is a wasteful number, since it uses less digits than its factorization.

2538228139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10893916.

The product of its digits is 207360, while the sum is 43.

The square root of 2538228139 is about 50380.8310669842. The cubic root of 2538228139 is about 1364.0916530906.

The spelling of 2538228139 in words is "two billion, five hundred thirty-eight million, two hundred twenty-eight thousand, one hundred thirty-nine".