18488486231 has 2 divisors, whose sum is σ = 18488486232. Its totient is φ = 18488486230.

The previous prime is 18488486227. The next prime is 18488486251. The reversal of 18488486231 is 13268488481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18488486231 - 2² = 18488486227 is a prime.

It is a super-2 number, since 2×18488486231² (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 (18488486251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9244243115 + 9244243116.

It is an arithmetic number, because the mean of its divisors is an integer number (9244243116).

Almost surely, 2^18488486231 is an apocalyptic number.

18488486231 is a deficient number, since it is larger than the sum of its proper divisors (1).

18488486231 is an equidigital number, since it uses as much as digits as its factorization.

18488486231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2359296, while the sum is 53.

The spelling of 18488486231 in words is "eighteen billion, four hundred eighty-eight million, four hundred eighty-six thousand, two hundred thirty-one".