18454196693 has 2 divisors, whose sum is σ = 18454196694. Its totient is φ = 18454196692.

The previous prime is 18454196687. The next prime is 18454196699. The reversal of 18454196693 is 39669145481.

It is a balanced prime because it is at equal distance from previous prime (18454196687) and next prime (18454196699).

It can be written as a sum of positive squares in only one way, i.e., 11916342244 + 6537854449 = 109162^2 + 80857^2 .

It is a cyclic number.

It is not a de Polignac number, because 18454196693 - 2¹⁸ = 18453934549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18454196699) 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, 9227098346 + 9227098347.

It is an arithmetic number, because the mean of its divisors is an integer number (9227098347).

Almost surely, 2^18454196693 is an apocalyptic number.

It is an amenable number.

18454196693 is a deficient number, since it is larger than the sum of its proper divisors (1).

18454196693 is an equidigital number, since it uses as much as digits as its factorization.

18454196693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 56.

The spelling of 18454196693 in words is "eighteen billion, four hundred fifty-four million, one hundred ninety-six thousand, six hundred ninety-three".