18205982983 has 2 divisors, whose sum is σ = 18205982984. Its totient is φ = 18205982982.

The previous prime is 18205982969. The next prime is 18205982987. The reversal of 18205982983 is 38928950281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18205982983 - 2¹³ = 18205974791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18205982987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9102991491 + 9102991492.

It is an arithmetic number, because the mean of its divisors is an integer number (9102991492).

Almost surely, 2^18205982983 is an apocalyptic number.

18205982983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18205982983 is an equidigital number, since it uses as much as digits as its factorization.

18205982983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 18205982983 in words is "eighteen billion, two hundred five million, nine hundred eighty-two thousand, nine hundred eighty-three".