20190883709 has 2 divisors, whose sum is σ = 20190883710. Its totient is φ = 20190883708.

The previous prime is 20190883693. The next prime is 20190883711. The reversal of 20190883709 is 90738809102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20189568100 + 1315609 = 142090^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 20190883709 - 2⁴ = 20190883693 is a prime.

Together with 20190883711, 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 (20190885709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095441854 + 10095441855.

It is an arithmetic number, because the mean of its divisors is an integer number (10095441855).

Almost surely, 2^20190883709 is an apocalyptic number.

It is an amenable number.

20190883709 is a deficient number, since it is larger than the sum of its proper divisors (1).

20190883709 is an equidigital number, since it uses as much as digits as its factorization.

20190883709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 20190883709 in words is "twenty billion, one hundred ninety million, eight hundred eighty-three thousand, seven hundred nine".