5396186821 has 2 divisors, whose sum is σ = 5396186822. Its totient is φ = 5396186820.

The previous prime is 5396186779. The next prime is 5396186881. The reversal of 5396186821 is 1286816935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5210818596 + 185368225 = 72186^2 + 13615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5396186821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5396186881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2698093410 + 2698093411.

It is an arithmetic number, because the mean of its divisors is an integer number (2698093411).

Almost surely, 2^5396186821 is an apocalyptic number.

It is an amenable number.

5396186821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5396186821 is an equidigital number, since it uses as much as digits as its factorization.

5396186821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The square root of 5396186821 is about 73458.7423047795. The cubic root of 5396186821 is about 1753.9975900195.

The spelling of 5396186821 in words is "five billion, three hundred ninety-six million, one hundred eighty-six thousand, eight hundred twenty-one".