20738903 has 2 divisors, whose sum is σ = 20738904. Its totient is φ = 20738902.

The previous prime is 20738849. The next prime is 20738917. The reversal of 20738903 is 30983702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20738903 - 2⁸ = 20738647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20738903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20738933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10369451 + 10369452.

It is an arithmetic number, because the mean of its divisors is an integer number (10369452).

Almost surely, 2^20738903 is an apocalyptic number.

20738903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20738903 is an equidigital number, since it uses as much as digits as its factorization.

20738903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20738903 is about 4553.9985726831. The cubic root of 20738903 is about 274.7442382374.

The spelling of 20738903 in words is "twenty million, seven hundred thirty-eight thousand, nine hundred three".