1648772903 has 2 divisors, whose sum is σ = 1648772904. Its totient is φ = 1648772902.

The previous prime is 1648772891. The next prime is 1648772927. The reversal of 1648772903 is 3092778461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1648772903 - 2⁴ = 1648772887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648772953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824386451 + 824386452.

It is an arithmetic number, because the mean of its divisors is an integer number (824386452).

Almost surely, 2^1648772903 is an apocalyptic number.

1648772903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648772903 is an equidigital number, since it uses as much as digits as its factorization.

1648772903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1648772903 is about 40605.0846939149. The cubic root of 1648772903 is about 1181.3727447901.

The spelling of 1648772903 in words is "one billion, six hundred forty-eight million, seven hundred seventy-two thousand, nine hundred three".