1826808442969 has 2 divisors, whose sum is σ = 1826808442970. Its totient is φ = 1826808442968.

The previous prime is 1826808442961. The next prime is 1826808443027. The reversal of 1826808442969 is 9692448086281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1054893326400 + 771915116569 = 1027080^2 + 878587^2 .

It is an emirp because it is prime and its reverse (9692448086281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1826808442969 - 2³ = 1826808442961 is a prime.

It is a super-2 number, since 2×1826808442969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1826808442961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913404221484 + 913404221485.

It is an arithmetic number, because the mean of its divisors is an integer number (913404221485).

Almost surely, 2^{1826808442969} is an apocalyptic number.

It is an amenable number.

1826808442969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1826808442969 is an equidigital number, since it uses as much as digits as its factorization.

1826808442969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95551488, while the sum is 67.

The spelling of 1826808442969 in words is "one trillion, eight hundred twenty-six billion, eight hundred eight million, four hundred forty-two thousand, nine hundred sixty-nine".