18621486383 has 2 divisors, whose sum is σ = 18621486384. Its totient is φ = 18621486382.

The previous prime is 18621486349. The next prime is 18621486407. The reversal of 18621486383 is 38368412681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18621486383 - 2⁶ = 18621486319 is a prime.

It is a super-2 number, since 2×18621486383² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18621486083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9310743191 + 9310743192.

It is an arithmetic number, because the mean of its divisors is an integer number (9310743192).

Almost surely, 2^18621486383 is an apocalyptic number.

18621486383 is a deficient number, since it is larger than the sum of its proper divisors (1).

18621486383 is an equidigital number, since it uses as much as digits as its factorization.

18621486383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 50.

The spelling of 18621486383 in words is "eighteen billion, six hundred twenty-one million, four hundred eighty-six thousand, three hundred eighty-three".