210302740889 has 2 divisors, whose sum is σ = 210302740890. Its totient is φ = 210302740888.

The previous prime is 210302740883. The next prime is 210302740891. The reversal of 210302740889 is 988047203012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208225204489 + 2077536400 = 456317^2 + 45580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210302740889 is a prime.

It is a super-3 number, since 3×210302740889³ (a number of 35 digits) contains 333 as substring.

Together with 210302740891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210302740883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105151370444 + 105151370445.

It is an arithmetic number, because the mean of its divisors is an integer number (105151370445).

Almost surely, 2^210302740889 is an apocalyptic number.

It is an amenable number.

210302740889 is a deficient number, since it is larger than the sum of its proper divisors (1).

210302740889 is an equidigital number, since it uses as much as digits as its factorization.

210302740889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 210302740889 in words is "two hundred ten billion, three hundred two million, seven hundred forty thousand, eight hundred eighty-nine".