18796744697 has 2 divisors, whose sum is σ = 18796744698. Its totient is φ = 18796744696.

The previous prime is 18796744657. The next prime is 18796744711. The reversal of 18796744697 is 79644769781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16707889081 + 2088855616 = 129259^2 + 45704^2 .

It is an emirp because it is prime and its reverse (79644769781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18796744697 - 2⁶ = 18796744633 is a prime.

It is a super-2 number, since 2×18796744697² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18796744657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9398372348 + 9398372349.

It is an arithmetic number, because the mean of its divisors is an integer number (9398372349).

Almost surely, 2^18796744697 is an apocalyptic number.

It is an amenable number.

18796744697 is a deficient number, since it is larger than the sum of its proper divisors (1).

18796744697 is an equidigital number, since it uses as much as digits as its factorization.

18796744697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128024064, while the sum is 68.

The spelling of 18796744697 in words is "eighteen billion, seven hundred ninety-six million, seven hundred forty-four thousand, six hundred ninety-seven".