1918930337833 has 2 divisors, whose sum is σ = 1918930337834. Its totient is φ = 1918930337832.

The previous prime is 1918930337789. The next prime is 1918930337869. The reversal of 1918930337833 is 3387330398191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1915145996544 + 3784341289 = 1383888^2 + 61517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1918930337833 - 2¹⁷ = 1918930206761 is a prime.

It is a super-2 number, since 2×1918930337833² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1918930317833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959465168916 + 959465168917.

It is an arithmetic number, because the mean of its divisors is an integer number (959465168917).

Almost surely, 2^{1918930337833} is an apocalyptic number.

It is an amenable number.

1918930337833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918930337833 is an equidigital number, since it uses as much as digits as its factorization.

1918930337833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 1918930337833 in words is "one trillion, nine hundred eighteen billion, nine hundred thirty million, three hundred thirty-seven thousand, eight hundred thirty-three".