1018426667669 has 2 divisors, whose sum is σ = 1018426667670. Its totient is φ = 1018426667668.

The previous prime is 1018426667651. The next prime is 1018426667693. The reversal of 1018426667669 is 9667666248101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990691762225 + 27734905444 = 995335^2 + 166538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018426667669 is a prime.

It is a super-2 number, since 2×1018426667669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1018426667639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509213333834 + 509213333835.

It is an arithmetic number, because the mean of its divisors is an integer number (509213333835).

Almost surely, 2^{1018426667669} is an apocalyptic number.

It is an amenable number.

1018426667669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018426667669 is an equidigital number, since it uses as much as digits as its factorization.

1018426667669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 1018426667669 in words is "one trillion, eighteen billion, four hundred twenty-six million, six hundred sixty-seven thousand, six hundred sixty-nine".