2748775139 has 4 divisors (see below), whose sum is σ = 2998663800. Its totient is φ = 2498886480.

The previous prime is 2748775123. The next prime is 2748775147. The reversal of 2748775139 is 9315778472.

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 2748775139 - 2⁴ = 2748775123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2748775639) 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, 124944314 + ... + 124944335.

It is an arithmetic number, because the mean of its divisors is an integer number (749665950).

Almost surely, 2^2748775139 is an apocalyptic number.

2748775139 is a deficient number, since it is larger than the sum of its proper divisors (249888661).

2748775139 is a wasteful number, since it uses less digits than its factorization.

2748775139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249888660.

The product of its digits is 2963520, while the sum is 53.

The square root of 2748775139 is about 52428.7625163898. The cubic root of 2748775139 is about 1400.8116278501.

The spelling of 2748775139 in words is "two billion, seven hundred forty-eight million, seven hundred seventy-five thousand, one hundred thirty-nine".