6781239092 has 6 divisors (see below), whose sum is σ = 11867168418. Its totient is φ = 3390619544.

The previous prime is 6781238977. The next prime is 6781239103. The reversal of 6781239092 is 2909321876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4216424356 + 2564814736 = 64934^2 + 50644^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847654883 + ... + 847654890.

It is an arithmetic number, because the mean of its divisors is an integer number (1977861403).

Almost surely, 2^6781239092 is an apocalyptic number.

It is an amenable number.

6781239092 is a deficient number, since it is larger than the sum of its proper divisors (5085929326).

6781239092 is a wasteful number, since it uses less digits than its factorization.

6781239092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695309777 (or 1695309775 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 6781239092 is about 82348.2792291375. The cubic root of 6781239092 is about 1892.7925546609.

The spelling of 6781239092 in words is "six billion, seven hundred eighty-one million, two hundred thirty-nine thousand, ninety-two".