18032179987 has 2 divisors, whose sum is σ = 18032179988. Its totient is φ = 18032179986.

The previous prime is 18032179981. The next prime is 18032180003. The reversal of 18032179987 is 78997123081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18032179987 - 2⁷ = 18032179859 is a prime.

It is not a weakly prime, because it can be changed into another prime (18032179981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9016089993 + 9016089994.

It is an arithmetic number, because the mean of its divisors is an integer number (9016089994).

Almost surely, 2^18032179987 is an apocalyptic number.

18032179987 is a deficient number, since it is larger than the sum of its proper divisors (1).

18032179987 is an equidigital number, since it uses as much as digits as its factorization.

18032179987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 18032179987 in words is "eighteen billion, thirty-two million, one hundred seventy-nine thousand, nine hundred eighty-seven".