18232703987 has 2 divisors, whose sum is σ = 18232703988. Its totient is φ = 18232703986.

The previous prime is 18232703969. The next prime is 18232704001. The reversal of 18232703987 is 78930723281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18232703987 - 2¹⁶ = 18232638451 is a prime.

It is not a weakly prime, because it can be changed into another prime (18232703947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9116351993 + 9116351994.

It is an arithmetic number, because the mean of its divisors is an integer number (9116351994).

Almost surely, 2^18232703987 is an apocalyptic number.

18232703987 is a deficient number, since it is larger than the sum of its proper divisors (1).

18232703987 is an equidigital number, since it uses as much as digits as its factorization.

18232703987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 18232703987 in words is "eighteen billion, two hundred thirty-two million, seven hundred three thousand, nine hundred eighty-seven".