202613450989 has 2 divisors, whose sum is σ = 202613450990. Its totient is φ = 202613450988.

The previous prime is 202613450987. The next prime is 202613451097. The reversal of 202613450989 is 989054316202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171464730889 + 31148720100 = 414083^2 + 176490^2 .

It is a cyclic number.

It is not a de Polignac number, because 202613450989 - 2¹ = 202613450987 is a prime.

Together with 202613450987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202613450987) 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, 101306725494 + 101306725495.

It is an arithmetic number, because the mean of its divisors is an integer number (101306725495).

Almost surely, 2^202613450989 is an apocalyptic number.

It is an amenable number.

202613450989 is a deficient number, since it is larger than the sum of its proper divisors (1).

202613450989 is an equidigital number, since it uses as much as digits as its factorization.

202613450989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 202613450989 in words is "two hundred two billion, six hundred thirteen million, four hundred fifty thousand, nine hundred eighty-nine".