985407186469 has 2 divisors, whose sum is σ = 985407186470. Its totient is φ = 985407186468.

The previous prime is 985407186409. The next prime is 985407186473. The reversal of 985407186469 is 964681704589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559047813025 + 426359373444 = 747695^2 + 652962^2 .

It is an emirp because it is prime and its reverse (964681704589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985407186469 - 2⁷ = 985407186341 is a prime.

It is a super-2 number, since 2×985407186469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985407186409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492703593234 + 492703593235.

It is an arithmetic number, because the mean of its divisors is an integer number (492703593235).

Almost surely, 2^985407186469 is an apocalyptic number.

It is an amenable number.

985407186469 is a deficient number, since it is larger than the sum of its proper divisors (1).

985407186469 is an equidigital number, since it uses as much as digits as its factorization.

985407186469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 985407186469 in words is "nine hundred eighty-five billion, four hundred seven million, one hundred eighty-six thousand, four hundred sixty-nine".