5818230991 has 2 divisors, whose sum is σ = 5818230992. Its totient is φ = 5818230990.

The previous prime is 5818230973. The next prime is 5818231021. The reversal of 5818230991 is 1990328185.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5818230991 - 2¹⁷ = 5818099919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5818230931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2909115495 + 2909115496.

It is an arithmetic number, because the mean of its divisors is an integer number (2909115496).

Almost surely, 2^5818230991 is an apocalyptic number.

5818230991 is a deficient number, since it is larger than the sum of its proper divisors (1).

5818230991 is an equidigital number, since it uses as much as digits as its factorization.

5818230991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 5818230991 is about 76277.3294695088. The cubic root of 5818230991 is about 1798.5823190149.

The spelling of 5818230991 in words is "five billion, eight hundred eighteen million, two hundred thirty thousand, nine hundred ninety-one".