2748942139 has 2 divisors, whose sum is σ = 2748942140. Its totient is φ = 2748942138.

The previous prime is 2748942113. The next prime is 2748942167. The reversal of 2748942139 is 9312498472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2748942139 - 2⁷ = 2748942011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2748942092 and 2748942101.

It is not a weakly prime, because it can be changed into another prime (2748942169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1374471069 + 1374471070.

It is an arithmetic number, because the mean of its divisors is an integer number (1374471070).

Almost surely, 2^2748942139 is an apocalyptic number.

2748942139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2748942139 is an equidigital number, since it uses as much as digits as its factorization.

2748942139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 2748942139 is about 52430.3551294477. The cubic root of 2748942139 is about 1400.8399957343.

The spelling of 2748942139 in words is "two billion, seven hundred forty-eight million, nine hundred forty-two thousand, one hundred thirty-nine".