5818231021 has 2 divisors, whose sum is σ = 5818231022. Its totient is φ = 5818231020.

The previous prime is 5818230991. The next prime is 5818231031. The reversal of 5818231021 is 1201328185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5225844100 + 592386921 = 72290^2 + 24339^2 .

It is a cyclic number.

It is not a de Polignac number, because 5818231021 - 2⁷ = 5818230893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5818231031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2909115510 + 2909115511.

It is an arithmetic number, because the mean of its divisors is an integer number (2909115511).

Almost surely, 2^5818231021 is an apocalyptic number.

It is an amenable number.

5818231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5818231021 is an equidigital number, since it uses as much as digits as its factorization.

5818231021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 5818231021 is about 76277.3296661597. The cubic root of 5818231021 is about 1798.5823221062.

The spelling of 5818231021 in words is "five billion, eight hundred eighteen million, two hundred thirty-one thousand, twenty-one".