5478365491 has 2 divisors, whose sum is σ = 5478365492. Its totient is φ = 5478365490.

The previous prime is 5478365419. The next prime is 5478365509. The reversal of 5478365491 is 1945638745.

Together with previous prime (5478365419) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5478365491 - 2²¹ = 5476268339 is a prime.

It is not a weakly prime, because it can be changed into another prime (5478365591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2739182745 + 2739182746.

It is an arithmetic number, because the mean of its divisors is an integer number (2739182746).

Almost surely, 2^5478365491 is an apocalyptic number.

5478365491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5478365491 is an equidigital number, since it uses as much as digits as its factorization.

5478365491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 52.

The square root of 5478365491 is about 74015.9813216038. The cubic root of 5478365491 is about 1762.8566610905.

The spelling of 5478365491 in words is "five billion, four hundred seventy-eight million, three hundred sixty-five thousand, four hundred ninety-one".