18200191000837 has 2 divisors, whose sum is σ = 18200191000838. Its totient is φ = 18200191000836.

The previous prime is 18200191000813. The next prime is 18200191000879. The reversal of 18200191000837 is 73800019100281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13797911418916 + 4402279581921 = 3714554^2 + 2098161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18200191000837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18200191000837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18200191070837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100095500418 + 9100095500419.

It is an arithmetic number, because the mean of its divisors is an integer number (9100095500419).

Almost surely, 2^{18200191000837} is an apocalyptic number.

It is an amenable number.

18200191000837 is a deficient number, since it is larger than the sum of its proper divisors (1).

18200191000837 is an equidigital number, since it uses as much as digits as its factorization.

18200191000837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 18200191000837 in words is "eighteen trillion, two hundred billion, one hundred ninety-one million, eight hundred thirty-seven", and thus it is an aban number.