1999774003 has 2 divisors, whose sum is σ = 1999774004. Its totient is φ = 1999774002.

The previous prime is 1999773949. The next prime is 1999774013. The reversal of 1999774003 is 3004779991.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3004779991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1999774003 - 2⁹ = 1999773491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1999774013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999887001 + 999887002.

It is an arithmetic number, because the mean of its divisors is an integer number (999887002).

Almost surely, 2^1999774003 is an apocalyptic number.

1999774003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999774003 is an equidigital number, since it uses as much as digits as its factorization.

1999774003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 1999774003 is about 44718.8327553392. The cubic root of 1999774003 is about 1259.8735917110.

The spelling of 1999774003 in words is "one billion, nine hundred ninety-nine million, seven hundred seventy-four thousand, three".