6549690379 has 2 divisors, whose sum is σ = 6549690380. Its totient is φ = 6549690378.

The previous prime is 6549690341. The next prime is 6549690409. The reversal of 6549690379 is 9730969456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6549690379 - 2¹³ = 6549682187 is a prime.

It is not a weakly prime, because it can be changed into another prime (6549690779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3274845189 + 3274845190.

It is an arithmetic number, because the mean of its divisors is an integer number (3274845190).

Almost surely, 2^6549690379 is an apocalyptic number.

6549690379 is a deficient number, since it is larger than the sum of its proper divisors (1).

6549690379 is an equidigital number, since it uses as much as digits as its factorization.

6549690379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The square root of 6549690379 is about 80930.1574136613. The cubic root of 6549690379 is about 1870.9991494887. Note that the first 3 decimals are identical.

The spelling of 6549690379 in words is "six billion, five hundred forty-nine million, six hundred ninety thousand, three hundred seventy-nine".