5626319861 has 2 divisors, whose sum is σ = 5626319862. Its totient is φ = 5626319860.

The previous prime is 5626319857. The next prime is 5626319873. The reversal of 5626319861 is 1689136265.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5249727025 + 376592836 = 72455^2 + 19406^2 .

It is a cyclic number.

It is not a de Polignac number, because 5626319861 - 2² = 5626319857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5626319801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813159930 + 2813159931.

It is an arithmetic number, because the mean of its divisors is an integer number (2813159931).

Almost surely, 2^5626319861 is an apocalyptic number.

It is an amenable number.

5626319861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5626319861 is an equidigital number, since it uses as much as digits as its factorization.

5626319861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 5626319861 is about 75008.7985572359. The cubic root of 5626319861 is about 1778.5857407670.

The spelling of 5626319861 in words is "five billion, six hundred twenty-six million, three hundred nineteen thousand, eight hundred sixty-one".