7920549827 has 2 divisors, whose sum is σ = 7920549828. Its totient is φ = 7920549826.

The previous prime is 7920549761. The next prime is 7920549853. The reversal of 7920549827 is 7289450297.

It is a strong prime.

It is an emirp because it is prime and its reverse (7289450297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7920549827 - 2²⁰ = 7919501251 is a prime.

It is not a weakly prime, because it can be changed into another prime (7920549877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960274913 + 3960274914.

It is an arithmetic number, because the mean of its divisors is an integer number (3960274914).

Almost surely, 2^7920549827 is an apocalyptic number.

7920549827 is a deficient number, since it is larger than the sum of its proper divisors (1).

7920549827 is an equidigital number, since it uses as much as digits as its factorization.

7920549827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The square root of 7920549827 is about 88997.4709022678. The cubic root of 7920549827 is about 1993.3571127023.

The spelling of 7920549827 in words is "seven billion, nine hundred twenty million, five hundred forty-nine thousand, eight hundred twenty-seven".