18734758697 has 4 divisors (see below), whose sum is σ = 19052297040. Its totient is φ = 18417220356.

The previous prime is 18734758687. The next prime is 18734758741. The reversal of 18734758697 is 79685743781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18734758697 - 2¹⁶ = 18734693161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18734758657) 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 in 3 ways as a sum of consecutive naturals, for example, 158769083 + ... + 158769200.

It is an arithmetic number, because the mean of its divisors is an integer number (4763074260).

Almost surely, 2^18734758697 is an apocalyptic number.

It is an amenable number.

18734758697 is a deficient number, since it is larger than the sum of its proper divisors (317538343).

18734758697 is an equidigital number, since it uses as much as digits as its factorization.

18734758697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317538342.

The product of its digits is 71124480, while the sum is 65.

The spelling of 18734758697 in words is "eighteen billion, seven hundred thirty-four million, seven hundred fifty-eight thousand, six hundred ninety-seven".