1863130903 has 2 divisors, whose sum is σ = 1863130904. Its totient is φ = 1863130902.

The previous prime is 1863130891. The next prime is 1863130943. The reversal of 1863130903 is 3090313681.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1863130903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1863130943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931565451 + 931565452.

It is an arithmetic number, because the mean of its divisors is an integer number (931565452).

Almost surely, 2^1863130903 is an apocalyptic number.

1863130903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863130903 is an equidigital number, since it uses as much as digits as its factorization.

1863130903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1863130903 is about 43164.0000810861. Note that the first 4 decimals coincide. The cubic root of 1863130903 is about 1230.4985977357.

The spelling of 1863130903 in words is "one billion, eight hundred sixty-three million, one hundred thirty thousand, nine hundred three".