20143786393 has 2 divisors, whose sum is σ = 20143786394. Its totient is φ = 20143786392.

The previous prime is 20143786381. The next prime is 20143786417. The reversal of 20143786393 is 39368734102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20110643344 + 33143049 = 141812^2 + 5757^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143786393 - 2⁵ = 20143786361 is a prime.

It is not a weakly prime, because it can be changed into another prime (20143783393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071893196 + 10071893197.

It is an arithmetic number, because the mean of its divisors is an integer number (10071893197).

Almost surely, 2^20143786393 is an apocalyptic number.

It is an amenable number.

20143786393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143786393 is an equidigital number, since it uses as much as digits as its factorization.

20143786393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 20143786393 in words is "twenty billion, one hundred forty-three million, seven hundred eighty-six thousand, three hundred ninety-three".