602781138893 has 2 divisors, whose sum is σ = 602781138894. Its totient is φ = 602781138892.

The previous prime is 602781138871. The next prime is 602781138913. The reversal of 602781138893 is 398831187206.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371225774089 + 231555364804 = 609283^2 + 481202^2 .

It is a cyclic number.

It is not a de Polignac number, because 602781138893 - 2²⁶ = 602714030029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (602781138803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301390569446 + 301390569447.

It is an arithmetic number, because the mean of its divisors is an integer number (301390569447).

Almost surely, 2^602781138893 is an apocalyptic number.

It is an amenable number.

602781138893 is a deficient number, since it is larger than the sum of its proper divisors (1).

602781138893 is an equidigital number, since it uses as much as digits as its factorization.

602781138893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 602781138893 in words is "six hundred two billion, seven hundred eighty-one million, one hundred thirty-eight thousand, eight hundred ninety-three".