2547838779 has 4 divisors (see below), whose sum is σ = 3397118376. Its totient is φ = 1698559184.

The previous prime is 2547838753. The next prime is 2547838837. The reversal of 2547838779 is 9778387452.

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

It is a cyclic number.

It is not a de Polignac number, because 2547838779 - 2¹⁷ = 2547707707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2547838729) 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, 424639794 + ... + 424639799.

It is an arithmetic number, because the mean of its divisors is an integer number (849279594).

Almost surely, 2^2547838779 is an apocalyptic number.

2547838779 is a deficient number, since it is larger than the sum of its proper divisors (849279597).

2547838779 is an equidigital number, since it uses as much as digits as its factorization.

2547838779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849279596.

The product of its digits is 23708160, while the sum is 60.

The square root of 2547838779 is about 50476.1208790850. The cubic root of 2547838779 is about 1365.8111310994.

The spelling of 2547838779 in words is "two billion, five hundred forty-seven million, eight hundred thirty-eight thousand, seven hundred seventy-nine".