20143301909 has 2 divisors, whose sum is σ = 20143301910. Its totient is φ = 20143301908.

The previous prime is 20143301881. The next prime is 20143301911. The reversal of 20143301909 is 90910334102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19951562500 + 191739409 = 141250^2 + 13847^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143301909 - 2¹² = 20143297813 is a prime.

It is a super-2 number, since 2×20143301909² (a number of 21 digits) contains 22 as substring.

Together with 20143301911, 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 (20143301929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071650954 + 10071650955.

It is an arithmetic number, because the mean of its divisors is an integer number (10071650955).

Almost surely, 2^20143301909 is an apocalyptic number.

It is an amenable number.

20143301909 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143301909 is an equidigital number, since it uses as much as digits as its factorization.

20143301909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 20143301909 in words is "twenty billion, one hundred forty-three million, three hundred one thousand, nine hundred nine".