18734614387 has 2 divisors, whose sum is σ = 18734614388. Its totient is φ = 18734614386.

The previous prime is 18734614357. The next prime is 18734614463. The reversal of 18734614387 is 78341643781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18734614387 - 2¹¹ = 18734612339 is a prime.

It is not a weakly prime, because it can be changed into another prime (18734614337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367307193 + 9367307194.

It is an arithmetic number, because the mean of its divisors is an integer number (9367307194).

Almost surely, 2^18734614387 is an apocalyptic number.

18734614387 is a deficient number, since it is larger than the sum of its proper divisors (1).

18734614387 is an equidigital number, since it uses as much as digits as its factorization.

18734614387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 52.

The spelling of 18734614387 in words is "eighteen billion, seven hundred thirty-four million, six hundred fourteen thousand, three hundred eighty-seven".