1018426667693 has 2 divisors, whose sum is σ = 1018426667694. Its totient is φ = 1018426667692.

The previous prime is 1018426667669. The next prime is 1018426667711. The reversal of 1018426667693 is 3967666248101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 681948943204 + 336477724489 = 825802^2 + 580067^2 .

It is a cyclic number.

It is not a de Polignac number, because 1018426667693 - 2¹⁰ = 1018426666669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1018426667603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509213333846 + 509213333847.

It is an arithmetic number, because the mean of its divisors is an integer number (509213333847).

Almost surely, 2^{1018426667693} is an apocalyptic number.

It is an amenable number.

1018426667693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018426667693 is an equidigital number, since it uses as much as digits as its factorization.

1018426667693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15676416, while the sum is 59.

The spelling of 1018426667693 in words is "one trillion, eighteen billion, four hundred twenty-six million, six hundred sixty-seven thousand, six hundred ninety-three".