1820082769 has 2 divisors, whose sum is σ = 1820082770. Its totient is φ = 1820082768.

The previous prime is 1820082767. The next prime is 1820082773. The reversal of 1820082769 is 9672800281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721835025 + 98247744 = 41495^2 + 9912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1820082769 - 2¹ = 1820082767 is a prime.

It is a super-2 number, since 2×1820082769² = 6625402572021414722, which contains 22 as substring.

Together with 1820082767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1820082767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910041384 + 910041385.

It is an arithmetic number, because the mean of its divisors is an integer number (910041385).

Almost surely, 2^1820082769 is an apocalyptic number.

It is an amenable number.

1820082769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820082769 is an equidigital number, since it uses as much as digits as its factorization.

1820082769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1820082769 is about 42662.4280720167. The cubic root of 1820082769 is about 1220.9476577235.

The spelling of 1820082769 in words is "one billion, eight hundred twenty million, eighty-two thousand, seven hundred sixty-nine".