6942740549 has 2 divisors, whose sum is σ = 6942740550. Its totient is φ = 6942740548.

The previous prime is 6942740507. The next prime is 6942740573. The reversal of 6942740549 is 9450472496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6681918049 + 260822500 = 81743^2 + 16150^2 .

It is a cyclic number.

It is not a de Polignac number, because 6942740549 - 2¹⁶ = 6942675013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6942740497 and 6942740506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6942740579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3471370274 + 3471370275.

It is an arithmetic number, because the mean of its divisors is an integer number (3471370275).

Almost surely, 2^6942740549 is an apocalyptic number.

It is an amenable number.

6942740549 is a deficient number, since it is larger than the sum of its proper divisors (1).

6942740549 is an equidigital number, since it uses as much as digits as its factorization.

6942740549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 6942740549 is about 83323.1093334856. The cubic root of 6942740549 is about 1907.7010202880.

The spelling of 6942740549 in words is "six billion, nine hundred forty-two million, seven hundred forty thousand, five hundred forty-nine".