813090929669 has 2 divisors, whose sum is σ = 813090929670. Its totient is φ = 813090929668.

The previous prime is 813090929633. The next prime is 813090929681. The reversal of 813090929669 is 966929090318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 746997204100 + 66093725569 = 864290^2 + 257087^2 .

It is a cyclic number.

It is not a de Polignac number, because 813090929669 - 2¹² = 813090925573 is a prime.

It is a super-2 number, since 2×813090929669² (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 (813090929069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406545464834 + 406545464835.

It is an arithmetic number, because the mean of its divisors is an integer number (406545464835).

Almost surely, 2^813090929669 is an apocalyptic number.

It is an amenable number.

813090929669 is a deficient number, since it is larger than the sum of its proper divisors (1).

813090929669 is an equidigital number, since it uses as much as digits as its factorization.

813090929669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 813090929669 in words is "eight hundred thirteen billion, ninety million, nine hundred twenty-nine thousand, six hundred sixty-nine".