1820834311 has 2 divisors, whose sum is σ = 1820834312. Its totient is φ = 1820834310.

The previous prime is 1820834299. The next prime is 1820834359. The reversal of 1820834311 is 1134380281.

It is a weak prime.

It is an emirp because it is prime and its reverse (1134380281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1820834311 - 2¹⁷ = 1820703239 is a prime.

It is a super-2 number, since 2×1820834311² = 6630875176229689442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1820834111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910417155 + 910417156.

It is an arithmetic number, because the mean of its divisors is an integer number (910417156).

Almost surely, 2^1820834311 is an apocalyptic number.

1820834311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820834311 is an equidigital number, since it uses as much as digits as its factorization.

1820834311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1820834311 is about 42671.2351707799. The cubic root of 1820834311 is about 1221.1156843636.

The spelling of 1820834311 in words is "one billion, eight hundred twenty million, eight hundred thirty-four thousand, three hundred eleven".