861852983 has 2 divisors, whose sum is σ = 861852984. Its totient is φ = 861852982.

The previous prime is 861852931. The next prime is 861852989. The reversal of 861852983 is 389258168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861852983 - 2⁶ = 861852919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861852989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430926491 + 430926492.

It is an arithmetic number, because the mean of its divisors is an integer number (430926492).

Almost surely, 2^861852983 is an apocalyptic number.

861852983 is a deficient number, since it is larger than the sum of its proper divisors (1).

861852983 is an equidigital number, since it uses as much as digits as its factorization.

861852983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 50.

The square root of 861852983 is about 29357.3326955975. The cubic root of 861852983 is about 951.6510469160.

The spelling of 861852983 in words is "eight hundred sixty-one million, eight hundred fifty-two thousand, nine hundred eighty-three".