20203013249 has 2 divisors, whose sum is σ = 20203013250. Its totient is φ = 20203013248.

The previous prime is 20203013189. The next prime is 20203013267. The reversal of 20203013249 is 94231030202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18557250625 + 1645762624 = 136225^2 + 40568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203013249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20203013269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101506624 + 10101506625.

It is an arithmetic number, because the mean of its divisors is an integer number (10101506625).

Almost surely, 2^20203013249 is an apocalyptic number.

It is an amenable number.

20203013249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203013249 is an equidigital number, since it uses as much as digits as its factorization.

20203013249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 20203013249 in words is "twenty billion, two hundred three million, thirteen thousand, two hundred forty-nine".