1421783903 has 2 divisors, whose sum is σ = 1421783904. Its totient is φ = 1421783902.

The previous prime is 1421783861. The next prime is 1421783917. The reversal of 1421783903 is 3093871241.

It is a strong prime.

It is an emirp because it is prime and its reverse (3093871241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421783903 - 2²⁸ = 1153348447 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 (1421783953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710891951 + 710891952.

It is an arithmetic number, because the mean of its divisors is an integer number (710891952).

Almost surely, 2^1421783903 is an apocalyptic number.

1421783903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421783903 is an equidigital number, since it uses as much as digits as its factorization.

1421783903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1421783903 is about 37706.5498686899. The cubic root of 1421783903 is about 1124.4613462142.

The spelling of 1421783903 in words is "one billion, four hundred twenty-one million, seven hundred eighty-three thousand, nine hundred three".