1820018191301 has 2 divisors, whose sum is σ = 1820018191302. Its totient is φ = 1820018191300.

The previous prime is 1820018191297. The next prime is 1820018191363. The reversal of 1820018191301 is 1031918100281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1360640596225 + 459377595076 = 1166465^2 + 677774^2 .

It is an emirp because it is prime and its reverse (1031918100281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1820018191301 - 2² = 1820018191297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1820018191801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910009095650 + 910009095651.

It is an arithmetic number, because the mean of its divisors is an integer number (910009095651).

Almost surely, 2^{1820018191301} is an apocalyptic number.

It is an amenable number.

1820018191301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820018191301 is an equidigital number, since it uses as much as digits as its factorization.

1820018191301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 35.

The spelling of 1820018191301 in words is "one trillion, eight hundred twenty billion, eighteen million, one hundred ninety-one thousand, three hundred one".