20203049 has 2 divisors, whose sum is σ = 20203050. Its totient is φ = 20203048.

The previous prime is 20203003. The next prime is 20203069. The reversal of 20203049 is 94030202.

It is an a-pointer prime, because the next prime (20203069) can be obtained adding 20203049 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11833600 + 8369449 = 3440^2 + 2893^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203049 - 2¹² = 20198953 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20203049.

It is not a weakly prime, because it can be changed into another prime (20203069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101524 + 10101525.

It is an arithmetic number, because the mean of its divisors is an integer number (10101525).

Almost surely, 2^20203049 is an apocalyptic number.

It is an amenable number.

20203049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203049 is an equidigital number, since it uses as much as digits as its factorization.

20203049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20203049 is about 4494.7801948482. The cubic root of 20203049 is about 272.3572700342.

The spelling of 20203049 in words is "twenty million, two hundred three thousand, forty-nine".