18649541983 has 2 divisors, whose sum is σ = 18649541984. Its totient is φ = 18649541982.

The previous prime is 18649541917. The next prime is 18649541987. The reversal of 18649541983 is 38914594681.

It is a strong prime.

It is an emirp because it is prime and its reverse (38914594681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18649541983 - 2¹⁷ = 18649410911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18649541987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9324770991 + 9324770992.

It is an arithmetic number, because the mean of its divisors is an integer number (9324770992).

Almost surely, 2^18649541983 is an apocalyptic number.

18649541983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18649541983 is an equidigital number, since it uses as much as digits as its factorization.

18649541983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 58.

The spelling of 18649541983 in words is "eighteen billion, six hundred forty-nine million, five hundred forty-one thousand, nine hundred eighty-three".