6539949037 has 2 divisors, whose sum is σ = 6539949038. Its totient is φ = 6539949036.

The previous prime is 6539949001. The next prime is 6539949047. The reversal of 6539949037 is 7309499356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6498616996 + 41332041 = 80614^2 + 6429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6539949037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6539949047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269974518 + 3269974519.

It is an arithmetic number, because the mean of its divisors is an integer number (3269974519).

Almost surely, 2^6539949037 is an apocalyptic number.

It is an amenable number.

6539949037 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539949037 is an equidigital number, since it uses as much as digits as its factorization.

6539949037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5511240, while the sum is 55.

The square root of 6539949037 is about 80869.9513849242. The cubic root of 6539949037 is about 1870.0711114254.

The spelling of 6539949037 in words is "six billion, five hundred thirty-nine million, nine hundred forty-nine thousand, thirty-seven".