1285889100437 has 2 divisors, whose sum is σ = 1285889100438. Its totient is φ = 1285889100436.

The previous prime is 1285889100409. The next prime is 1285889100439. The reversal of 1285889100437 is 7340019885821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 757107074161 + 528782026276 = 870119^2 + 727174^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285889100437 - 2⁶ = 1285889100373 is a prime.

Together with 1285889100439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285889100439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642944550218 + 642944550219.

It is an arithmetic number, because the mean of its divisors is an integer number (642944550219).

Almost surely, 2^{1285889100437} is an apocalyptic number.

It is an amenable number.

1285889100437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285889100437 is an equidigital number, since it uses as much as digits as its factorization.

1285889100437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 1285889100437 in words is "one trillion, two hundred eighty-five billion, eight hundred eighty-nine million, one hundred thousand, four hundred thirty-seven".