20133813389 has 2 divisors, whose sum is σ = 20133813390. Its totient is φ = 20133813388.

The previous prime is 20133813377. The next prime is 20133813397. The reversal of 20133813389 is 98331833102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13702575364 + 6431238025 = 117058^2 + 80195^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133813389 - 2⁴ = 20133813373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133813289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066906694 + 10066906695.

It is an arithmetic number, because the mean of its divisors is an integer number (10066906695).

Almost surely, 2^20133813389 is an apocalyptic number.

It is an amenable number.

20133813389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133813389 is an equidigital number, since it uses as much as digits as its factorization.

20133813389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 20133813389 in words is "twenty billion, one hundred thirty-three million, eight hundred thirteen thousand, three hundred eighty-nine".