5491359493 has 2 divisors, whose sum is σ = 5491359494. Its totient is φ = 5491359492.

The previous prime is 5491359491. The next prime is 5491359527. The reversal of 5491359493 is 3949531945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3696396804 + 1794962689 = 60798^2 + 42367^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491359493 - 2¹ = 5491359491 is a prime.

It is a super-2 number, since 2×5491359493² = 60310058162722434098, which contains 22 as substring.

Together with 5491359491, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5491359493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5491359491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2745679746 + 2745679747.

It is an arithmetic number, because the mean of its divisors is an integer number (2745679747).

Almost surely, 2^5491359493 is an apocalyptic number.

It is an amenable number.

5491359493 is a deficient number, since it is larger than the sum of its proper divisors (1).

5491359493 is an equidigital number, since it uses as much as digits as its factorization.

5491359493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2624400, while the sum is 52.

The square root of 5491359493 is about 74103.7076872676. The cubic root of 5491359493 is about 1764.2493195600.

The spelling of 5491359493 in words is "five billion, four hundred ninety-one million, three hundred fifty-nine thousand, four hundred ninety-three".