1978000603 has 2 divisors, whose sum is σ = 1978000604. Its totient is φ = 1978000602.

The previous prime is 1978000561. The next prime is 1978000613. The reversal of 1978000603 is 3060008791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1978000603 - 2²⁹ = 1441129691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1978000613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989000301 + 989000302.

It is an arithmetic number, because the mean of its divisors is an integer number (989000302).

Almost surely, 2^1978000603 is an apocalyptic number.

1978000603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1978000603 is an equidigital number, since it uses as much as digits as its factorization.

1978000603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1978000603 is about 44474.7186950069. The cubic root of 1978000603 is about 1255.2844237182.

The spelling of 1978000603 in words is "one billion, nine hundred seventy-eight million, six hundred three", and thus it is an aban number.