1002020194837 has 2 divisors, whose sum is σ = 1002020194838. Its totient is φ = 1002020194836.

The previous prime is 1002020194807. The next prime is 1002020194843. The reversal of 1002020194837 is 7384910202001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519774670116 + 482245524721 = 720954^2 + 694439^2 .

It is an emirp because it is prime and its reverse (7384910202001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002020194837 - 2²⁷ = 1001885977109 is a prime.

It is a super-2 number, since 2×1002020194837² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1002020194796 and 1002020194805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002020194807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501010097418 + 501010097419.

It is an arithmetic number, because the mean of its divisors is an integer number (501010097419).

Almost surely, 2^{1002020194837} is an apocalyptic number.

It is an amenable number.

1002020194837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002020194837 is an equidigital number, since it uses as much as digits as its factorization.

1002020194837 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 37.

Adding to 1002020194837 its reverse (7384910202001), we get a palindrome (8386930396838).

The spelling of 1002020194837 in words is "one trillion, two billion, twenty million, one hundred ninety-four thousand, eight hundred thirty-seven".