1990301842253 has 2 divisors, whose sum is σ = 1990301842254. Its totient is φ = 1990301842252.

The previous prime is 1990301842237. The next prime is 1990301842273. The reversal of 1990301842253 is 3522481030991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1989913673449 + 388168804 = 1410643^2 + 19702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1990301842253 - 2⁴ = 1990301842237 is a prime.

It is a super-2 number, since 2×1990301842253² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1990301842198 and 1990301842207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1990301842273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995150921126 + 995150921127.

It is an arithmetic number, because the mean of its divisors is an integer number (995150921127).

Almost surely, 2^{1990301842253} is an apocalyptic number.

It is an amenable number.

1990301842253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990301842253 is an equidigital number, since it uses as much as digits as its factorization.

1990301842253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 1990301842253 in words is "one trillion, nine hundred ninety billion, three hundred one million, eight hundred forty-two thousand, two hundred fifty-three".