861830059 has 2 divisors, whose sum is σ = 861830060. Its totient is φ = 861830058.

The previous prime is 861830003. The next prime is 861830083. The reversal of 861830059 is 950038168.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861830059 - 2⁷ = 861829931 is a prime.

It is not a weakly prime, because it can be changed into another prime (861830089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430915029 + 430915030.

It is an arithmetic number, because the mean of its divisors is an integer number (430915030).

Almost surely, 2^861830059 is an apocalyptic number.

861830059 is a deficient number, since it is larger than the sum of its proper divisors (1).

861830059 is an equidigital number, since it uses as much as digits as its factorization.

861830059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 861830059 is about 29356.9422624360. The cubic root of 861830059 is about 951.6426093431.

The spelling of 861830059 in words is "eight hundred sixty-one million, eight hundred thirty thousand, fifty-nine".