1902243552089 has 2 divisors, whose sum is σ = 1902243552090. Its totient is φ = 1902243552088.

The previous prime is 1902243552019. The next prime is 1902243552127. The reversal of 1902243552089 is 9802553422091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1602249640000 + 299993912089 = 1265800^2 + 547717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1902243552089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1902243552019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951121776044 + 951121776045.

It is an arithmetic number, because the mean of its divisors is an integer number (951121776045).

Almost surely, 2^{1902243552089} is an apocalyptic number.

It is an amenable number.

1902243552089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902243552089 is an equidigital number, since it uses as much as digits as its factorization.

1902243552089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1902243552089 in words is "one trillion, nine hundred two billion, two hundred forty-three million, five hundred fifty-two thousand, eighty-nine".